A base for the fence to allow the centering of a mortise on 10-14mm stock using the 4mm cutter.
Here is my Teztool hybrid design
Pic 1- Take one Festool Trim Stop and remove all hardware, cut the two side wings off (if you dont want to revert to the original, but my tip is you wont as this is a ripper jig if you are into boxes or work where you constantly use thin stock)
Pic 2 - slip shoe plate back on.
Pic 3 - just another angle
Pick 4 - Shows the left side mortise in a 10mm board with the Domi fence on the lowest 14mm height setting. The right side mortise shows the result when the Teztool Shoe is fitted to the base and the height setting is set to 20mm. Perfect center alignment. If you want to center an 8mm board, just set Domi on the 16mm setting.
I have on order via Post some some 4.5mm and .5mm black plastic that will be used as an infill for the jig so small widths can be plunged. Will post an update when completed. I love this jig, and its well worth the expense of rooting a perfectly good Trim Stop.