Download - How to Make a Mortise-and-Tenon
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EDU 290H
Ryan Lewis
How to Make a Mortise-and-Tenon
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Mortise-and-TenonVery strong jointMore complicated to
make than some other joints
With tips and tricks, it can easy to make
Always cut the mortise first
Cut the tenon to fit in mortise
Photo: p. 102, Wagner
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Layout of Mortise-and-TenonStart with two 2” x 11” x
¾” boardsLabel one board M and
the other TOn M, mark 1st line 2”
from one end2nd mark 2¼” from end3rd mark 3¾” from end 4th mark 4” from endDraw straight lines
across board in line with marks
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Layout of Mortise-and-TenonBetween two inner
lines, mark ¼” in from each side in two places
Create lines parallel to sides of board and shade in center like picture
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Layout of Mortise-and-TenonOn end of board,
mark line 1” down from top edge
On T, mark a line 7/8” in from one end
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Creating the MortiseUse a machine called
a mortiserDrills square holesUse the ¼” mortise
bitTo start, clamp in
board and check board flushness to table
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Setting DepthOpen clamp on left
side of machineAdjust depth of bit to
line on end
Close clamp on left side
This engages stopper for depth
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Starting the MortiseCenter bit and align
to one endStart drilling
After cut, move bit about ½ the width of the bit and repeat
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Drilling Process
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Finishing MortiseContinue/finish to
cut mortiseAfter mortise is
complete, it is optional to clean out mortise with a small mortise
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Making the TenonAdjust the blade
slightly below ¼”After blade
adjustment, set fence so the opposite side of the blade aligns with the layout line on board T
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Making the TenonCut shoulders first
(on 2” sides)Use multiple passes
to cut length of tenon
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Making the TenonFlip and repeatTest fit and raise
blade slowly to create tight fit
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Making the TenonBy slowly creeping
up the height of the blade, a perfect fit tenon can be cut
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Making the TenonAfter cutting
shoulders, cut the cheeks using same procedure as shoulders
Remember to flipCreep up on the depth
of cut by slowly adjusting height
After tenon fits, mortise-and-tenon is complete
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SummaryRemember, cut the
mortise firstSneak up on the size
of tenon to create a perfect fit
By using proper layout and some of the techniques, making a mortise-and-tenon can be easy
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Wagner, W. H. & Kicklighter, C. E. (2006). Modern Woodworking. Tinley Park, IL : The Goodheart-Wilcox Company, Inc
All photos taken by Barrie Gostlin
References