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I'm looking at putting together a polisher similar to those in the DIY section. I have exactly zero experience with laps. I've seen some posts mentioning RPMs and grit stages, but not sure what to aim forI've got a motor laying around that's 1/5hp and 825 rpm. How would that work for direct drive?
A lap and a polisher are two different animals! if you want to use grit that RPM is way too fast. This is a polisher, it only uses cerium oxide on it. the lap is a similar machine and I only use 120 grit on it. In Between the two I use a bull wheel sander using 100 gt, 220 gt, and 400grit.
Thanks for the clarification. What I'm looking at are the designs that use the diamond pads for slab polishing
I'm looking at putting together a polisher similar to those in the DIY section. I have exactly zero experience with laps. I've seen some posts mentioning RPMs and grit stages, but not sure what to aim forI've got a motor laying around that's 1/5hp and 825 rpm. How would that work for direct drive?
I've had decent luck with marble. These have been sitting in a jar for over a year with some harder rocks, so they've lost some of the shine, but they came out of the tumbler pretty nice. Skipped the coarse and did 2 days each 220/600/polish. You loose a LOT of material with the 220, so you have to fill in with something before the next stage, but it's solid, so there are hardly any cracks or pits, which is more than I can say for any of the harder stuff I've tried. I've got another batch in right now (ran out of coarse grit, so I needed to kill a few days on something that didn't need it until the grit arrives)
Anyone ever tried tumbling a single larger rock (about 2") with a bunch of smalls? I've got a piece I'd hate to break up, but only have a 3lb tumbler. I think it would roll around just fine in the barrel, but I was wondering if anyone has any experience trying something like that.
Yeah, can't make a living doing that! Maybe he's a trust fund kid. And I wonder if he got it right the first time, or how many broke on him when he was halfway finished?
That's what I was wondering. It's mind blowing that he could visualize that piece at all, but equally impressive that he could do 13 months of work ending up with stone that thin without making any goofs.
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Wooferhound: My mind is flexible like Rock Slurry
May 17, 2024 21:06:47 GMT -5
Wooferhound: I grease the wheels in a factory, hunched over metal machines , the gears moving remind me of bodies in motion
May 17, 2024 22:40:28 GMT -5
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Welcome to the Rock Tumbling Hobby Forum where we share a love of rocks and a sense of community as enduring as the stones we polish.
The RTH Forum of www.RockTumbling.com is an Amazon Associate site and we earn money from
qualifying purchases you make after clicking on our links such as this
Rock Tumbling Supplies on Amazon
link for instance, or any of our various product ads and banners. By clicking our links every time you begin your Amazon shopping
experience, you are generating a bit of revenue for the forum which helps us cover our expenses. Thank you for your support!