Page 1 (of Mortice & Tennon Jig)
Keeping the Jig table perpendicular to the Jig Box is very important, any error here will be doubled when the joint is assembled.
I used UHMW tracks on the underside of the jig table to keep the jig table
perpendicular to the front of the jig box and to allow it to slide back and
forth on the jig box. See figure 5
Figure 5: Jig table, underside view
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Figure 6 & 7: Jig Table, perpendicular adjustment - Details (correction in figure 6: "1/4-20 Epoxied T-Nut")
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It would be wise to build a stop block that fastens to the "T" tracks, and keeps the work piece 90 degrees to the the Jig Table. It will also simplify setup for multiple M & T's. See Figure 9 and 10 to see the Stop Block in use. |
Figure 8: Stop Block
How to use the M & T Jig:
Figure 8 |
Figure 9 |
| Figure 8 & 9: M & T Jig in use | Note position of Stop Block. Also Note the top of the apron "Tenon" in Figure 8 is on the left, as is the stop block. In Figure 9 for the corresponding mortise "Cabriole Leg" the top of the leg is to the right, as is the stop block. |
Figure 10 |
Figure 11 |
Note the line at the centre of the Jig Table Insert. Draw a line centered across the narrow part of end of the Tenon workpiece. Align the centre lines of the Jig Table Insert and the workpiece. Adjust the 90 degree Stop Block accordingly to make cutting aditional Tenons easier. Make sure you take the bushing "OFF" when you cut the Tenon. |
Draw a line across the Mortice piece to correspond with the location of the line across the Tenon. Make sure you put the bushing "ON" when cutting the Mortice. |
Page 1 (of Mortice & Tennon Jig)