I saw in a magazine that someone built a table saw extension for the back of their saw to increase their table top area to hold large piece of wood for cuts. The person used a 3' x 4' piece of melaine with hardwood edges attached. He has cut slots to match his current miter gauge slots so he can push wood past the blade.
Question I have is: How were the slots created? I have seen alot of the extensions being made in magazines but they don't saw how the slots are made. I know I could use a straight bit for a router that is the same width as the miter slot for my table saw but the miter gauge has a washer on the bottom of the bar to keep is 'locked' in the channel. How would this slot be made for the T-style miter gauge slot? I could use a T-slot bit for the router but I would imagine that this would leave 'slop' for the miter gauge to 'move' in and perhaps throw the cut off.
Or would this be a mute point if I took the washer off of the bottom the miter gauge bar and just use the straight bit?
Thanks, Karl