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-TE,NON MORTISE.AND ANGLE,D JOINTS Angled tenonsare often usedin building chairs to get around thejoinery problemcausedby seatsthat are wider at thefront than at the back-a tradition' aI designfeature. To accommodatethe angledside rails, tenonsmust be cut at oppositeendsat opposing angles,while the tenon shouldersmust beparallel to eachother.Although the tenon is tricky to mark out and produce,it fits into a standardmortise.
TENONS ANGTED CUTTING
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theiob 1 Planning full-size ona theproject tenons, sketch I Tomarkoutangled pieceof plywood ln thisexample, theunderside or hardboard. thelegsandrails. including of a chairframehasbeendrawn, onthefrontandbackrails; blindtenons areneeded Standard mormustbecutonthesiderails;andstandard angled tenons outin thelegs.Tosetthebladeangle tisesmustbechopped aligntwo tenoncheeks, theangled onyourtablesawforcutting andadjusta slidingbevel oftheoutline alongonecorner boards (above). Installa dadohead to theangleformedbytheboards
anauxilInstall andnotch to theblades. andtransfer theangle 71)andseta cuttingwidthof % inchanda iaryfence(page height of X inch.Feeda scrappiecethesamesizeasyourstock both face-down intothedadoheadto maketestcutsacross (inset).The thetestpieceonyouroutline ends. Thenposrtion a n dt h ed r a w i nsgh o u l ldi n eu p ; s h o u l d lei n r e so nt h ep i e c e setof cuts, thecuttingwidthandmakeanother if not,increase height thecutting align.Adjust untiltheshoulders continuing onthepiecelineupwiththedrawtng. untilthetenoncheeks
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