Oval Sander

beatnik · Post by **beatnik** » Thu Jul 24, 2014 9:20 am

On the areas with less radius, more flat, a drum tends to want to dig in and makes it difficult to keep a smooth line.

JPG · Post by **JPG** » Thu Jul 24, 2014 10:49 am

beatnik wrote:On the areas with less radius, more flat, a drum tends to want to dig in and makes it difficult to keep a smooth line.

Use a router insert with the starter pins. The drum can be adjusted for 'depth' beyond the pins by moving the table in/out.

bffulgham · Post by **bffulgham** » Thu Jul 24, 2014 10:53 am

The Shopsmith Pattern Sanding Guide would work on the OD, but not so well on the ID.

Maybe a custom table insert with a disk the same size as the sander drum.....Kinda like the Overhead Pin Routing concept.

Pretty much a duplicate of what BuckeyeDennis said.

JPG · Post by **JPG** » Thu Jul 24, 2014 11:11 am

bffulgham wrote:The Shopsmith Pattern Sanding Guide would work on the OD, but not so well on the ID.

Maybe a custom table insert with a disk the same size as the sander drum.....Kinda like the Overhead Pin Routing concept.

Pretty much a duplicate of what BuckeyeDennis said.

Why not? Raise the quill, place the workpiece/pattern on the table, lower the quill and sand the inner edge.

beatnik · Post by **beatnik** » Thu Jul 24, 2014 12:19 pm

I do this regularly with curved pieces. You don't want to get an enclosed loop in a set up like this with a drum sander though. It would be scary. I think that's whats being said ?

JPG · Post by **JPG** » Thu Jul 24, 2014 1:40 pm

beatnik wrote:I do this regularly with curved pieces. You don't want to get an enclosed loop in a set up like this with a drum sander though. It would be scary. I think that's whats being said ?

If a 'large' oval, I do not see the 'scary' part.

beatnik · Post by **beatnik** » Thu Jul 24, 2014 1:50 pm

Maybe I've been around this 3 phase machinery too long, that set up shown has tossed pieces 40 ft.

beeg · Post by **beeg** » Thu Jul 24, 2014 1:59 pm

What sizes of ovals are ya doing?

JPG · Post by **JPG** » Thu Jul 24, 2014 2:02 pm

beatnik wrote:Maybe I've been around this 3 phase machinery too long, that set up shown has tossed pieces 40 ft.

I was referring to the earlier posts re interior sanding an oval with a drum sander using a 'pilot' and pattern.

That thing you pictured can indeed create scary since that is a 'pinch' setup. I assume it is intended to create a 'width'. Cock it a little and it is airborne.

beatnik · Post by **beatnik** » Thu Jul 24, 2014 2:28 pm

The one I'm building right now is roughly 32 x 20.

I think I can make this sander just adapting a curved plate myself. I haven't found but two candidates, the Rigid and a Shop Fox that's a 4x36 belt. Gonna keep looking for better.