On 20-Mar-18 3:41 AM, woodchucker wrote:
On 3/19/2018 8:20 AM, dadiOH wrote:
"Perry" wrote in message
...
I'm not a wood worker so bear with me......


I've got a cast epoxy widget about 6 inches long x 2 inches wide x 1
inch
tall.

It's cast in a mold and has a sharp edge around the top from the casting
process. I want to remove this and shave maybe 1/16" off the top.

The sides are sloped so I cant grip it in a vice and machine it under a
milling machine.


I came across drum sanders and wondered if something like one of these
might work?



https://www.machineryhouse.com.au/L110

https://www.carbatec.com.au/sanding-and-finishing/sanding-machines-and-accessories/drum-sanders/sander-wide-drum-400mm-old-code-wds-400-wds-4080p




If I was to feed the 6" x 2" x 1" epoxy piece through what sort of
finish
might I expect and would it be likely to kick the piece around?

Yes, a drum sander could do the job assuming your piece has the minimum
length necessary - as specified by the manufacturer - to keep the
pressure
rollers properly in contact.Â* It won't get kicked around but don't try to
skinny it down in one pass.Â* The finish depends upon the grit of the
abrasive used.

Drum sanders are very handy and useful but it would be an expensive
way to
accomplish your goal.Â* Any reason you couldn't glue a piece of paper
to the
bottom with water soulble glue, glue that to a piece of ply then mill it
with your milling machine. When done, soak the casting free of the
paper and
carrier.


Or build a vacum table and hold it in place while milling. With edge
clamps, stops




Yeah, that was my first idea - machine down the top of a mold and use it
as a vacuum 'vise'.