Given a file:
which is set up for 0.81" thick wood, but if we wish to use 0.75629921 inch thick wood (19.2mm), then we would modify it by:
Drawing a proxy for the original thickness:
duplicating it in place:
Updating the duplicate to the new thickness:
Then using the measure tool to get the angle:
44.738 (why it’s not 45 is a mystery)
Select the proxy and the new thickness piece and rotate them:
If the direction of rotation is wrong either undo, or mirror to get the correct position.
Done
Drag things into alignment:
Where necessary, draw in additional geometry:
Done
and reposition it so that it crosses:
Select all the geometry:
and use Trim Vectors to remove what is not wanted:
Finish cleaning up by removing any extraneous geometry:
Then use the Line tool to draw in what is wanted:
Done
Delete the redundant geometry:
Select
and Join Vectors:
Repeat for the other notches.