The Shop > Wood & Stuff

Drum/ Thickness Sander

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S. Heslop:
Let there be squares.





Had a bit of an accident trying to grind a tool to not tear out the wood as much.



Eventually got it round with only a few chipouts. These could be filled but i'm not sure if it'd affect things too much.

Now i've got to make the second roller, which i'll probably cut the corners off the squares before gluing it up so there's less to remove in turning.

micktoon:
Hi Simon , looks like the plywood must have been quite decent stuff , the worse quality stuff seems to have so many voids in it these days I doubt of you could have turned it like that. It looks like it has turned out not bad at all so hopefully will do the job for you.
 I had been going to say for the car body filler idea , I think better then turning it would have been to have a sander passing back and forward as the cylinder you were working on rotated, this might still be an idea to finish off and crown the plywood version, I am thinking a hand held electric half sheet type flat base sander ?

 Good work .
  Cheers Mick.

S. Heslop:
I did sand it a bit, and tried sand it more at the edges than the middle to maybe give it a bit of a crown. But it didn't produce anything measurable and I thought i'd try leaving the crown for now and seeing how it tracks on its own. The portable belt sander I have doesn't seem to have any crown at all, but does have a flange that keeps the belt from slipping off.

Yeah i'm really surprised by the quality of the plywood too. There's a few ugly bits where the edges of plies meet and overlap. Of all the squares I cut I only had to reject 3 for voids/ layers coming loose. It wasn't expensive plywood too, just WBP from Doves in Newburn.

Also I just glued up the next roller. When trying to shake glue out the bottle I managed to get it all over my Fanciest Shirt. Hopefully it washes of or i'll have no shirts left without holes or glue on them.

S. Heslop:
Finished the second roller. Now i'm just waiting on the belt and some bearings to get delivered.

Something i've left late to really consider is the motor i'm gonna use. There's a second hand shop nearby with a whole shelf full of motors that look perfect for the job, but the guy is unfortunately refusing to sell them individually since they come as a set for a jacuzzi. If I had the money i'd probably buy the lot.

A while back a guy going by malbenbut gave me a motor for free. I'd been saving it for a bandsaw i'm hoping to build after this sander is complete, but if I can't find a more suitable motor before then I'll just use it with this.



Another reason i've been avoiding using it is because it's so big I figured it wouldn't fit, but I decided to measure it up anyways and it just barely fits...



Of course I could always move stuff around to accommodate it better since I haven't started building the body yet. But i'd rather at least avoid making the thing any taller.

greenie:
Have you worked out what the "surface speed" for the sanding roller will be, too slow and it will take forever to remove anything, then if it's too fast it will burn the finish on the timber ?

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