UNIVERSITY OF HUDDERSFIELD School of Art, Design and Architecture Department of Design THD1354: Theory for Animation and Motion Graphics Special Study: Laser Cutting & Projection Mapping with Different Materials By Si ieng Fung
Throughout the research for my Final Major Project, I have look into a lots of projection mapping artists, such as Davy and Kristin McGuire who created The Icebook - the world's first projection mapped pop-up book and explore the property of transforming with glass; Glass Cyphers- the collaboration by Griet Beyaert and Paul Miller, which involving the creation of 19 sculpted glass works and complex projection-mapping. I also looked into various ways of working with 'light' alongside the research, from the tradition technique shadow puppetry to the newest high end technology projection mapping, they are all new to me, this special study documented the beginning of the FMP idea, the skills and the software/program I used, and the processing. The beginning of the FMP, I been considering create shadow puppetry with paper cut out but the idea slowly change to explore the high and low- tech, that combine projection mapping with shadow puppetry or paper craft. Coincidence I attended a workshop organised by IOU Theatre in Halifax, Withy Lanterns with Bryan Tweddle, I thought I got a great idea while I making the lantern in the workshop: using the house lantern as the object the explore the shadow puppetry and projection mapping. How to make a lantern? Step 1: Build the frame with willow sticks and masking tape, Step 2: apply tissue paper on the lantern frame with PVA glue. Step 3: Leave it to dry. I really pleased with how it turns out, the structure was made within two hours and then I had to apply the tissue paper in studio which only take about an hour, I left the back and bottom of the lantern uncover because it will be easier for me to place/act the silhouette figures.
1.a) Projection mapping I took a picture of the house lantern and created a simple tracing of it black lines on Illustrator and save as PNG with a transparent background.
Then import to After Effect project with a black background. In the effects & presets panel choose the effect 'Fill' and drag it to my drawing, this allows me to choose the colour of the light and then add the effect 'Glow' and it's done.
I started animated the lines movement and the colour. Render the moving graphics when I done and ready for the projecting.
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It took me some times to set up the camera and projector in the studio, also adjust the house lantern, make sure the lines are projecting on the right place, it did look excited when I see it working but what really disappoint was when I look back to the videos which I took on my camera, the glowing lines wasn't showing, I can see the house when the lines were blue. I got few short clips work which were filmed on my phone. So now I know when I filming the footages for final edits, I should go to the photography department and get a professional one which could do a better job to film in the dark.
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1.b) Shadow puppetry For the shadow puppetry test, I folded some paper leaves and stick them on grey cardboard branches that I cut out. So when I set up the projector in the studio, I also projecting white screen on the house lantern, then hold the paper branches. I was surprised how clear the shadow was casted against the tissue paper. I tried to capture falling of the leaves by dropping the paper leaves from a higher level but it just drops straight and happened too quick, the camera didn't capture it. But I thought I could attach the leaves to the string by tying the cotton thread or using blue tac to stick the leaves on the tissue paper surface and take photos between each move.
You might be wondering there's nothing to do with laser cutting at this point, you are right but then I changed my idea, because of a lots of projection mappings were projecting on buildings, so I thought should I create a Huddersfield cityscape with paper and projecting on? But after the first marquee with paper, this is not going to work because it’s fragile so I won’t be able to transport them between uni and home. Then I looked back the research, Paul Miller who take part of the Glass Cyphers collaboration with Griet Beyaert, points out that glass is a really interesting medium, which is hard to get the image, but the glass could reflect light to other surfaces. That’s inspired me to test with the transparent medium, use perspex to explore the light. I spoke to Simon Raines, the technician in the Queen Street Studio, about is it possible to use perspex with laser cutter and how to set up a laser file with the particular software. There were a few things I need to bear in mind, black lines/fills are for cut though the material and red lines/fills are for the etching/engraving the surface.
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Laser cutting is a technology that uses a laser to cut materials, and is typically used for industrial manufacturing applications, but is also starting to be used by schools, small businesses, and hobbyists. Laser cutting works by directing the output of a high-power laser most commonly through optics. The laser optics and CNC (computer numerical control) are used to direct the material or the laser beam generated. A typical commercial laser for cutting materials would involve a motion control system to follow a CNC or G-code of the pattern to be cut onto the material. The focused laser beam is directed at the material, which then either melts, burns, vaporizes away, or is blown away by a jet of gas, leaving an edge with a high-quality surface finish. Industrial laser cutters are used to cut flat-sheet material as well as structural and piping materials. The first laser cutting machine was used to drill holes in diamond dies back to 1965. (Wikipedia, 2016) What you need to know about preparing and submit the files for cutting at University of Huddersfield: “File and LineTypes Suitable vector files for cutting are EPS, AI, PDF or CDR from Coreldraw. Suitable image files for etching are JPG or BMP with very high contrast images producing the best results. Line weight should be set to 0 or hairline and black to cut, red to etch. See below for instructions on preparing Autocad files for use in the laser. To speed things up boxes should be drawn using the minimum number of lines possible as below. The first arrangement will cut in approximately 1/3 the time of the second. If this is not possible leave a minimum gap of 2mm between individual parts. Sheet Materials Although the stock we carry is all 600x900mm please be aware that we need you to leave a border for tolerance so that the maximum sheet size you should work within is 580 x 880mm. We stock MDF, clear acrylic, styrene and polypropylene. See price list for details.
We can cut mild steel up to 1.8mm in thickness but do not hold any stock. If you intend to provide your own materials please check with a member of technical staff that they are laser compatible. Prohibited Materials Lexan, polycarbonate, PVC, vinyl, glass, foam core board and laminates. Prohibited materials could melt on the laser bed, catch fire or release toxic gas and the plastics listed release carcinogens such as benzene. If providing your own materials please ensure that they are perfectly flat. The close focusing required for cutting precludes the use of any materials which have pronounced undulations. CUT lines must be BLACK ETCHED lines must be RED TEXT must be SIMPLEX font, no other autocad fonts are laser compatible. SAVE your file using the PLOT to PDF command on ARCH D 36"x 24" paper size How to set up a laser file in Adobe Illustrator? Using your own materials • Set art board to match the size of the material in mm • Select File > New > Set width / size from the top menu • Allow 10mm from the border of the material. Configuring units & colour mode • Measurements: 1 unit = 1mm • Draw components at actual size. • If copying and pasting vectors from another file, make sure that they are at the scale you require • Make sure you are working in RGB mode • Select File > Document Colour Mode > RGB Laser cutting lines For everything you would like to have laser cut draw out your vector strokes in:
• Black: RGB: 0,0,0 • Stroke weight: to 0.01mm / 0.25 pt Cutting and speed: The laser cuts different materials at varying speeds. I always takes longer to cut thicker materials than thinner ones as more power is required at a lower speed. The laser is also faster at cutting straight lines than it is at cutting curves. Vector engraving / scoring lines We have established optimised vector/scoring settings for all our materials to achieve consistent results. The depth is very shallow and cosmetic, just scratching the surface. For everything you would like to be vector engraved/scored set the strokes to: • Red: RGB: 255,0,0 Stroke weight: to 0.01mm / 0.25 pt Raster engraving lines & fills While we can raster engrave thin vector strokes, it’s advised that you vector engrave/ score them. All vectors you would like raster engraved must be indicated by a vector fill. To turn a stroke into a filled shape: • Set strokes to a minimum of 0.40mm. / 1pt (anything thinner will cut not engrave) • Expand strokes. Select Object > Expand > Stroke / Fill Set all fill colours to: • Black: RGB: 0,0,0 Arrange parts economically When arranging artwork for engraving that have a few components on one sheet, keep all of the raster engraving as close together as possible and in horizontal row. Raster engraving standard appearance & depth We have established optimized settings for all materials. In raster engraving terms the marking is cosmetic, shallow and typically a balance between legibility and cleanliness. In laser terms depth is usually specified in microns.
Nesting components & minimum cut widths Nesting: • If compiling a file with lots of components on one sheet of material, make sure there is a gap of at least 2mm between the components. Small details / cut widths: As a benchmark, we recommend that minimum cut widths be no smaller than the thickness of the material. E.G. If cutting from 3mm acrylic, it’s best not to allow cut widths less than 3mm. We can go smaller but things can get quite fragile and the buildup of heat can cause the material to warp whilst cutting. Maintaining continuous vector geometry Try and make sure that all your vector paths are continuous. If strokes / closed shapes are constructed from more than one path, make sure that you join / close the paths. • To do this, use the Direct Selection Tool and select the open endpoints. • Select Object > Path > Join (Ctrl+J) from the top menu Reducing anchor points / simplifying drawing Draw with the least amount of anchor points possible without sacrificing the drawing appearance. If you can reduce them, we suggest you do. The machines will process your drawings quicker. Too many anchor points can also impact quality and if you present work with thousands of points we won’t be able to process it for you. • You can reduce the number of points with the Simplify tool • Select the stroke path you wish to simplify and select Object > Path > Simplify from the top menu • Adjust the sliders until you have maintained a balance between preserving appearance and reducing the number of anchor points Using text - outlining your fonts All text used needs to be Outlined / converted to paths. • Select Type > Font > Create outlines from the top menu This is to convert the text to vectors and preserve your font. If you don’t do this and we don’t have your font installed on our computers, the file will open in default font Myriad or Arial. The middle islands of some let-
ters will fall out when laser cut which can make the text difficult to read. If you would like to prevent this one option is to use a stencil font. Embedding images within a drawing There are 2 options when working with images in illustrator, embedding and using live trace. In both cases images need to be at least 300 dpi and in grayscale. We recommend you carry out any image editing in Photoshop or any other image editing software. • Import your image into your file Select File > Place.* from the top menu bar • You can lay vectors over the top of the image for laser cutting of vector engraving (in my files, I actually draw 0.001 black line around the build that I would like the laser cutter to cut it) Live tracing images You can also live trace (convert to vectors) the image you want to incorporate within your file. To do this first select the inserted image, then: • Select Object > Live Trace > Tracing Options. from the top menu bar • Experiment with the tracing options for the desired effect. Make sure your traced shapes are a solid Black RGB 0,0,0” Saving your file • Select File > Save As • Format Adobe Illustrator (ai) > Any version. File name Save your files in the following named format, replacing the fields with the relevant information: THICKNESS_ MATERIAL_DRAWINGNAME_NO OF REQUIRED IF APPLICABLE Make sure you give easily identifiable names to your drawings: For example: 3mm Perspex TownHall x1 (Unilearn.hud.ac.uk, 2016)
The laser cutting process Laser cutting is a precise method of cutting a design from a given material using a CAD file to guide it. There are three main types of lasers used in the industry: CO2 lasers Nd and Nd-YAG. We use CO 2 machines. This involves firing a laser which cuts by melting, burning or vaporizing your material. You can achieve a really fine level of cutting detail on with a wide variety of materials. Bare in mind that CO 2 lasers can’t cut metals and hard materials, they can however engrave them. Laser head and tolerance The beam is emitted from what’s called the ‘laser tube’ and is reflected by several mirrors up into the ‘laser head’ (like a periscope.) Within the head is a lens that finely focuses the beam onto the material surface for cutting or engraving. The kerf refers to how much of the material the laser takes away when cutting through. (the width of the groove made while cutting.) This varies from material to material and is also dependent on the laser beam tolerance i.e. the width of the beam. All our machines have a very fine tolerance. (Cutlasercut.com, 2016)
In the Queen Street Studio, we operate two laser cutting machines, a Kern HSE100 and a CADCAM FB1500 which operated by a member of technical staff on my behalf. To laser cut and engrave, I will need to create vector file(s) compiled in a drawing editing software, the one I uses is Adobe Illustrator. Step 1. Preparing my artwork Following the introduction from UniLearn and double checked with the technician from Queen Street studio, I prepared two Illustrator artworks to start with, so then I can compare which method I going for for my project. All my files setting is same: Artboard size: A5 = 210 x 148mm Measurement units: Millimeters Code Mode: RGB This is a trace of the Huddersfield Train Station, as you see the outline of the illustration is a really thin black line (0.001mm) that mean the laser head will follow the path of vector strokes and cutting all the way through the 3mm perspex sheet. And the part I would like to be vector engraved the surface(the laser beam will follow the path of vector strokes without cutting all the way through), I have to set the strokes (0.25mm) and fillings with red. Save file to “3mm Perspex TownHall Line x1”
For the second artwork, I using a grey jpeg photograph of the Huddersfield Train Station, the laser will reads the tonal qualities of the photograph just like a printer, the black/ dark areas receive most laser power when the laser cutter operating, the white areas do not get etched, the shades between the black and white will get a varying amount of power. I can just submit it as it is BUT that mean the whole photograph will be etch and it won’t cut the building on its own so which mean I need to draw a thin black outline (0.001mm) around the train station building so the outcome will etched and cut. Save file to “3mm Perspex TownHall Photo Etch x1”. Send the artworks to Simon, the Queen Street Studio technician, he will check again to see if it is fine for the laser cutter and the material I would like to cut. Please see the table on the page 11 to see the outcomes and adjustment. Step 2. Configure the laser cutters settings Simon will lay the chosen material in the machine bed and configure the machine to cut the artwork. He will adjust the Power, Speed and Frequency to suit the material I specific. Step 3. The job will be process The machine will then follow the path of the drawing strokes to cut out the components I have drawn. Depending on the material I using, it come with a protective backing during the laser cutting process that can be peeled away after the cutting is complete. This protects the surface from heat and burn marks.
Cut out 1: 3mm Perspex Train Station Line x1
Cut out 2: “3mm Perspex Train Station Photo Etch x1”. Image file formats: (engraving only) Grey scale Image files at least 300DPI sent as .jpeg, .tiff or .png
Cut out 3: “3mm Perspex Train Station Photo Etch Contrast x1”
Projected the light on it
The shadow it casted
I love the Cut out 1(illustration), but the outcome of cut out 2 (photo engraving) wasnâ€™t what I expected, then I rework on the cut out 2, to make the contrast stronger, which you will see it does work better and clear on the Cut out 3(stronger contrast of cut out 2). I like both of them, the illustration is simplifying but the photo engraving is with a lot more detail too, it was hard to decide which method so I decided to work on two sets of artworks, an illustration set and a photo engraving set. I submitted both files set to Simon, then he emailed me after few weeks, that he have some work for me to collect, he could do all the illustrations, as the photo engraving set seemed to have very high resolution, which caused the laser to crash. I collected the illustration set and spoke to my tutor about it, we all think that I could just work with illustration set from now on as it will take another week to get the photo engraving set done.
Material & The Properties Wood / MDF / Plywood
Raster & Vector engraving
MDF engraves with a pale orange brown colouration and with a good clarity. Be aware that the higher laser power and slower processing speeds required can causes more oils from the wood to be released and therefore mark the surface. The laser machine extraction can also pull these oils / fumes over the top surface creating a MDF is possibly one of the most common products around scorched edge appearance to in Laser cutting today. Consistent density and heat tolerance the engraving that is stronger makes MDF ideal for laser cutting the deeper the engraving. Some • The surfaces remain crack-free and do not show people like this effect but be signs of bruise by clamping aware if you want to keep a • Smooth and precise cutting edges clean result. • High repeatability and accuracy • Freely selectable contours • No chips, therefore no cleaning of the machine surrounding necessary. • The cut size with wood (depending on which materials are used and the thickness) can be extremely thin, achieve a typical cutting gap between 0.2 and 0.4 mm. MDF laser cuts with brown / black edge which is darker the thicker the MDF being cut. The edge can get dirty and in some cases mark if in contact with another material surface. The heat from the laser will causes burn marks on the edges or back of the material when the heat transfers back from the laser bed. Do not have any protective backing on the material. The tone and density can be vary from sheet to sheet because of the manufactured from natural softwood fibres.
Issues & solvation This is a test of the Grey jpeg file “Cut out 2” from above table, the engraved outcome wasn’t really good because of the image contrast wasn’t strong enough so we can barely see the detail.
I also had an issue with the engraved surface on MDF, the rough surface absorbs the remain greasy from the fingers which left darker marks on the surface.
Material & The Properties
Raster & Vector engraving
Issues & solvation
Perspex / Acrylic plastic
The available perspex sheet in the Queenstreet Studio are come with protective plastic film on both sides. As a standard the technician removes the top layer of protective backing when any engraving is required. They always leave the reverse side of the plastic film on to prevent any reverse markings when cutting is also required.
The reflection and the engraves leaves milky white finish on the surfaces, which look interesting with/without the light projecting on. It’s a time consuming process, as a lots of students’ work requesting to use the laser cutter in the Queen Street Studio, so sometimes it will take up to 5 days to get your work done, so it is important to get the artwork right from the first place, which will save your time and money. The pictures bolow shows what’s could get wrong even you prepared the right artworks: For example: I summited the Illustrator file of a black & white photograph of Caste Hill with a 0.001 black outline which mean the laser will cut thought the 3mm perspex.
Perspex is probably the most widely used materials within the laser cutting and engraving world! It is also known as Perspex which is one of the most respected acrylic manufacturers. The one I used for my final project is 3mm clear cast acrylic is produced in 600 × 900mm sheets. For ease of handling we normally work with 580 x 880mm. • Polished cutting edges even in filigree contours without re-work • No force impact on the material – therefor no mechanical stress of the material • Highest precision and great advantages in filigree cuttings, even the smallest lot sizes can be produced economically • Processing of pre-mounted multilayer function panels • Chipless laser cutting and engraving of plastics. Perspex is unique in that it’s the only material that completely vaporises when cut – it doesn’t melt and drip, it just disappears!
For Perspex the marking is a shallow cosmetic light surface scratching. All cast acrylic engraves with a milky white finish.
We need to remove the protective film to to engrave the surface. The downside of this is that the surface is more exposed when cutting. Very slight white heat marks can occur around the edge of the cuts. This is very minimal and usually unnoticeable. Markings tend to get slightly stronPerspex laser cuts with a highly polished edge, to achieve ger when cutting and engravthis by using a high laser frequency (ppi. pulses per inch) ing acrylic thicker than about that melts the edges as it cuts. If you look closely at the edge it is not entirely smooth and is made up of lots of tiny 8mm due to the slower speeds vertical lines. This is caused by the pulses of the laser which and higher powers required. is more evident on thicker acrylic.
But somehow when Simon received the Ai file, the photograph went missing. Which mean I end up with a piece of clear perspex come with Castle Hill shape.
This is a tracing of the Castle Hill (see original photograph above).
But somehow the lines of illustration messed up, what happened was when Simon received the Ai file, he opened it at CorelDraw (another vector graphics editor) straight away, so it didn’t convert the vector/ lines correctly so that changes the geometry of everything. (continued on next page)
Material & The Properties Paper
Raster & Vector engraving Protective backing wonâ€™t be applying on papers, as it rips the surface which mean the burn mark will be remain on the edge and back. In most case the laser will engrave and slightly discolour the paper surface producing a very subtle brown / orange marking
There are so many different type of papers and different Paper and card are extremely easy to cut due to them being GSMs which mean relatively thin compared to other materials. they react slightly The production of samples, customised or personalised differently to the products and designer articles is continuously becoming laser. The technician more significant, including a higher demand of extreme always run a quick flexible production processes which is becoming more requested. test to see which setting work the best Even very low laser power can be used to cut paper perfectly. with the paper type I Cutting, engraving and marking of cardboards and paperboards produces top quality cutting edges with none of the chose. The darker the tone of your paper or deformations that occur during punching. Paper can be laser cut for precise control on curves and card the less visible tight corners. Papers of varying thickness can also be laser burn marks will be. engraved to produce unique effects.
Issues & solvation The paper could be fragile sometimes, especially using laser cutter, I gave Simon the illustrator file with a few train tickets. It was a simple tracing of a building and tracing of Huddersfield map, I love the fixable of paper, I didnâ€™t draw the bottom line on the building which the train ticket still attached as one piece and I just fold it which make it become a pop up design. But as I mentioned, the paper is fragile, the fine detail on top of the building was easy to come off, and if I not careful with them, a corner could have folded or the details of the map will snap. The burn marks arenâ€™t really back on the back of the train ticket.
Issues & solvation (following the previous page)
Close up to the detailed part. After that happened, another technician suggested me to save the Adobe Illustrator(.ai) files to Illustrator EPS files which could avoid the messed missing photographs or vector/lines goes out of control. Another issues I had was the type for the Open Market illustration, I set it up as Marion, the font spacing was evenly across the sign, but the font style changed when Simon opened it with CorelDraw so the type aligns to left. To avoid the change of font style, select the type, go to Type on the top menu -> Create Outlines. Now the type become vector instead of type, it will stay like that even opening it at CorelDraw. Or save it as PDF if you prefer.
Also, some of the fine elements on the top of the buildings snapped because of cutting was too close, I adjusted the vector/ lines and get it re-cut again.
I also have to wrap each etching with tissue papers to avoid the scratches appear on the surfaces and store them in a box to avoid the material snap/break during transporting between uni and home.
Leeds Craft Hack was a drop in event aimed at adults, offers participants the chance to see and interact with digital artists and create their own crafts using digital processes, it was organised by members from Hackspace Leeds. One of the activities was laser cutting, to design and laser etch your own museum inspired coaster out of thin wood or perspex using Inkscape which is a free and open-source vector graphics design program and a laser cutter. According the Hackspace Leeds, the laser cutter is one of the most versatile tool that they have at the studio, is typically used to cut woods and perspex though even with a low powered laser, it is possible to etch designs into: glass, rubber, metal and even t-shirts. It allows us to transfer complicated designs, logos and photos to materials by, cutting, etching/ engraving to create objects for art & sculpture, jewellery, retail display, props and model prototyping.
They were showing us how to use Inkscape with few designs that they already on the laptops they provided, what we really did was add the text/ message and put the text on path, which to make the message wrap on the inside of the circle stroke. Once we got our designs ready, the workshop leader collected them off the laptop to a memory stick and take us to another room where the laser cutter located and he preparing the file setting, as everyone wanted their work cut in different size and material, I wanted mine as a coaster on wood, about 8 centimeters.
Someone asked if he can make his design to a keyring and cut it with coloured perspex the technician suggested him to add a small circle on the design so the laser cutter will also cut the hole when it operating. It was slightly smaller than mine he wanted to use it as keyring. The etching lines seem more obvious on the blue clear perspex as you see on the right. I not sure could it be that it still got the backing plastic film on. The reason of including this activity within my special study is that I finally had chance to see a laser cutter in action, the Queen Street studio wonâ€™t allow me to film the cutting process because of safety issue.
Please scan or click on the QR code to watch the video.
Projection mapping, also known as video mapping and spatial augmented reality, is a projection technology used to turn objects, often irregularly shaped, into a display surface for video projection. These objects may be complex industrial landscapes, such as buildings, small indoor objects or theatrical stages. By using specialized software, a two- or three-dimensional object is spatially mapped on the virtual program which mimics the real environment it is to be projected on. The software can interact with a projector to fit any desired image onto the surface of that object. This technique is used by artists and advertisers alike who can add extra dimensions, optical illusions, and notions of movement onto previously static objects. The video is commonly combined with, or triggered by, audio to create an audio-visual narrative. (Wikipedia, 2016)
I had brought myself a mini LED projector from Amazon, â€œCrenova XPE300 Eye Protection 60 Lux LED Portable Mini Projector Multimedia HDMI USB SD AV VGA for PC Laptop Mac Home Cinema Theater LCD + Remote Controlâ€?. The product name pretty tell you everything about it, it allow multi-function input, also can load photos or video to a SD card or USB stick and project from that but I mainly using HDMI input which is easy connect to Macbook via HDMI cable. The LED projector resolution is 320x240; the contrast is 300:1 and the brightness is 60 Lux, the suggestion distance for projection is 1 to 4 meters. The unit has control buttons on the top and it come with the remote control as well. The projector is really light for easy transportation, which ideal for me to take it to uni when I need to projecting and experimenting, perfect to use in dark, the display was clear when it projecting on the wall, and it could easier manual focus picture by turning the lens, it really easy to set up, just need to adjust the screen size inches by projection distance and position the level of the objects. The lightbulb could last for years. The picture quality is good overall, it is a bit pixelated and difficult to read small text but the picture I mainly projecting are motion graphics. Only downside is a very short power chord so I usually take an extender to uni with me. The speaker also built-in, sound quality is okay.
I looked into projection mapping, a technique that create certain shape motion graphic for the objects/ building. It is really complicated, the software for that is MadMapper, I can get a free demo but I don’t know how and where to start. I understand that you can create an object to start but I can’t figure out how to add the mask (video) to the object.
This is what’s VDMX5 look like when I loaded it up, I cannot change much of the workspace, I found out this setting is likely to react to the sounds, around the Macbook. I can select the graphics materials from left and right bin, the graphics will build up in layers, and modify the patterns/graphics. All works on VDMX5 were created by destroythingsbeautiful(Minuek,2011). Then someone mentioned VDMX5, Quartz Composer and Resolume, which are some softwares for visual performance, some could connect with MadMapper. When I looking at Jim Warrier’s work (a Berlin based music video artist and audio visual performer), he also provided some downloads online to use, I downloaded the VDMX5 demo and some files on Warrier’s blog (Minuek,2011).
The video below shows how the perspex capture the projecting light with the milky white finish surface, the experiment taken place in my bedroom, set up and connect the projector with Macbook on my desk, then place the perspex artwork on top of a shoes box as it was too low if I place the artwork on my bed, the artwork stands up on its own and using a flexible joint camera tripod so everything will be stable during the filming and I can focusing on VDMX5, play some music and see what patterns it will generate and projecting onto the perspex once everything is ready. The VDMX5 detected the sound from the projectorâ€™s built-in speaker, which working nicely. Also that showing result of the outcome of two methods: illustration and photo engraving, you will see which method created more milky white finish surface.
Please scan or click on the QR code to watch the video. I like the effect of layering cut out 1 and cut out 3 from the table on the right, the unengraved stay clear whcih allow the light shine through, which make the statue shape stand out from the building. I really happy with the material and the laser cut outcome, even with three layers of perspex, the light still show through, it do look like matt finish or unclear. I was disappointed when Simon told me that he canâ€™t process the photo engraving set, the only photo engraving test I have are the Huddersfield train station. It will be great if I get the photo engraving set and layering them with illustration one.
Exploring the property of projecting onto Perspex and what happen if I laying up the perspex and project light on them?
Cut out 1 & 2
Cut out 1 & 3
Cut out 3 & 2
Cut out 1, 3 & 2
Bibliography & References Unilearn.hud.ac.uk. (2016). [online] Available at: https://unilearn.hud.ac.uk/webapps/blackboard/content/listContent.jsp?course_id=_5564_1&content_id=_309131_1&mode=reset [Accessed 15 Apr. 2016]. Wikipedia. (2016). Laser cutting. [online] Available at: https://en.wikipedia.org/wiki/Laser_ cutting [Accessed 15 Apr. 2016]. Laserweb. (2016). Laser Web | Laser Cutting & Engraving Services UK. [online] Available at: http://www.laser-web.co.uk [Accessed 15 Apr. 2016]. Cutlasercut.com. (2016). Cut laser cut - Laser cutting and engraving service for creatives in London and the UK | Laser cutting services | Laser engraving acrylic Home. [online] Available at: http://www.cutlasercut.com [Accessed 15 Apr. 2016]. Wikipedia. (2016). Projection Mapping. [online] Available at: https://en.wikipedia.org/wiki/ Projection_mapping [Accessed 15 Apr. 2016]. Anon, (2016). [image] Available at: http://projection-mapping.org/whatis/ [Accessed 15 Apr. 2016]. Minuek. (2011). Downloads. [online] Available at: https://destroythingsbeautiful.com/downloads/ [Accessed 19 Apr. 2016].