Sanding discs

[Aussie]

Anyone using a sanding disc in their spindle?
Good bad etc ?

[Jimcad]

Sounds like a good way to start a fire!

[adze_cnc]

If you are foolish enough to run things at sufficient speed to generate sufficient friction then yeah you might start a fire. But you’re aren’t foolish, are you? A palm sander or vertical disc could start a fire too.

Here’s something that I came across years ago that I thought might be fun to try... I still think it might be fun to try... Whenever I get a chance to have some fun... Brushed aluminium from a cnc and Scotch-brite pad.

[LittleGreyMan]

I think it's worth experimenting. Could be useful.

With a palm sander, you control the pressure you're applying. Which is not the case with a CNC, which controls coordinates. So you'll probably have to use a very small path depth to avoid applying too high a pressure, as it will only be limited by the Z motor torque and could lead to a fire.

[Rcnewcomb]

There are examples you YouTube

[Phil]

Randall, I like that. I'm curious about the speed and feed that the Youtube poster used. Both look very slow which seems appropriate.

Phil

[rscrawford]

I've been close to pulling the trigger on a 6" random orbit sander from cnckitmill.com. My only concern is that the eccentric motion could be hard on my spindle (12hp ATC spindle, so about $10k to replace). Chuck from cnckitmill assures me it is well balanced. I'm probably going to buy one in the next couple months. Watching his videos, looks pretty fast. I'm sure it depends on the toolpath you create.

I think it has a 3/4" shaft, so you'd need at least an ER32 collet.

[Rcnewcomb]

The $495 price of the unit from cnckitmill.com is much better than the $2500 quote I received from GDP Tooling.