I’ve been building a disc sander that is powered by my lathe it’s constructed with plywood, and consists of four pieces that have to be put together in sequence to form the disc sander. the first piece has a key that slips in the tool slot on the bed rail of my lathe it forms one of the chambers of the dust collection, it also recieves the dust colection shroud (or would that be called a cowling?) the first piece slides up tight to the power head on my lathe.
The second piece is the disc itself it’s made out of two pieces of plywood laminated together I made the discs with a circle cuttig jig on my table saw that rides in my miter slot. The discs are mounted to a face plate, and sealed with shelac it has a 180 grit PSA sanding disc attached, and now is attaced to the lathe.
This dust collection shroud is acually the last piece of the disc sander I just got the pics out of sequence I made the shroud out of 3 maple veneers it’s a bent lamination mounted to a piece of plywood and slides into the first piece, and forms the last chamber of the dust collection.
The third piece of the disc sander is the table base it mounts to the lathe with a 1/2” bolt that goes all the way through the bed rail it has a plywood washer, and a wing nut that locks everything down to the lathe bed rail. The main dust collection chamber is built into this third piece, I’ve tested the dust collection with a scrap of ply for a temparary top it works quite well no dust escapes that i can tell i’ve used it to sand some wood for 2-3 minutes turned out the lights and shined a flash light couldn’t see any particles in the air. the top will be one layer of MDF with some formica for the finish surface, I will also add a miter slot in the top. I’m planning to give the top 1 1/2” over hang so I can clamp jigs to the top.
This has been a fun project I will add pics of the finished disc sander hope you enjoyed this. Dave
-- If I cut it too short I can scab a piece on, but if it's too long what do I do?