Building a horizontal slot mortiser?
A couple of years back I was in a woodshop (on an open studios tour) and saw a home built slot motiser. As I remember, it had a motor connected by belt to a rod-like fixture (mandrel?) spinning in bearings, with a chuck on the business end. An end mill like bit went into the chuck. This was all on the top of a bench, with the bit facing out. Then there was a sliding table sticking out from the bench, about 4″ below the bit, with two sets of two linear bearing slides, mounted 90 degress apart with a board in between them, and a board on top. End result was that the table could slide in and out, and side to side. The guy would pile wood on the table until the table height worked for whatever mortise he was cutting, put the piece on the table, slide it in, over and out and Voila, a mortise. I didn’t see it in operation, but I expressed interest and he gave me a quick verbal description in between people milling about asking questions about his work.
So I’m interested in building something similar and spent some time browsing the MSC catalog. This is pretty unknown territory for me, so I don’t know what the set of gear I need is called. The part that turns in the bearings, can attach a chuck to the front and a pulley to the rear. It obviously has to be able to withstand the thrust of the work pushing into the bit. In addition, it seems that a lever to move the table each way would make it all way easier.
Anyone have any advice or insight in to how to go about this?