jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 1, 2021 16:38:54 GMT -5
Home Depot sells 1 gallon paint cans. Should fit on most tumbler machines. Run it 60-70% full with water up to glass, no abrasives for hours or a day. Say good bye to sharp edges. On a couple of occasions arteries have been sliced on glass. The ones that bleed with those pumping sprays ! There is a great satisfaction running glass in a rotary at only the expense of a bit of water and electricity only to see the sharp edges do a disappearing act. The way glass chips it actually rounds it off on a larger scale initially in straight water with the barrel filled at an aggressive low level of 60% for a day than the initial coarse SiC run for a week or two.
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Post by miket on Apr 1, 2021 16:44:47 GMT -5
On a couple of occasions arteries have been sliced on glass. The ones that bleed with those pumping sprays ! There is a great satisfaction running glass in a rotary at only the expense of a bit of water and electricity only to see the sharp edges do a disappearing act. The way glass chips it actually rounds it off on a larger scale initially in straight water with the barrel filled at an aggressive low level of 60% for a day than the initial coarse SiC run for a week or two.
I'm guessing you're serious... That's a smart way to do it. And cheap, too.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 1, 2021 16:48:32 GMT -5
ALWAYS be cautious dropping a chunk of glass on a pile of rocks or other chunks of glass. It is surprising how fast a chip or chips will come flying off at high speed.
I get frosted edges when tumbling glass heavier than 30-35 grams/piece. Bigger pieces or even one big chunk in the batch will act as a hammer and beat the others up badly. And negatively effect polish.
Of course a slurry additive is a good idea. It only takes a few hours to bruise your batch of glass. My glass will not roll one single rotation without slurry thickener.
I only shape it in the rotary. Finishing steps all done in the vibe.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 1, 2021 16:51:45 GMT -5
Yes miket I have been cut bad tinkering with glass. Only due to carelessness and always handling 1+ pound chunks of it. It is much different than rock, even glassy agates. Obsidian is just as bad as man made glass.
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Post by miket on Apr 1, 2021 19:05:46 GMT -5
Yes miket I have been cut bad tinkering with glass. Only due to carelessness and always handling 1+ pound chunks of it. It is much different than rock, even glassy agates. Obsidian is just as bad as man made glass. I'll bet you have. I have encountered a few mishaps with obsidian...
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 2, 2021 6:27:50 GMT -5
Yes miket I have been cut bad tinkering with glass. Only due to carelessness and always handling 1+ pound chunks of it. It is much different than rock, even glassy agates. Obsidian is just as bad as man made glass. I'll bet you have. I have encountered a few mishaps with obsidian... The medical field claims obsidian chips can have the sharpest edge known and use them in plastic surgery to avoid scars. How sharp can sharp get ? Razor blades are sharp enough !
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Post by miket on Apr 2, 2021 9:10:16 GMT -5
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Post by Starguy on Apr 5, 2021 16:51:48 GMT -5
I started tumbling glass by breaking up a couple of large Beer Mugs and rolling that. I have been known to break a few beer mugs, roll and tumble myself. If it happens tonight, it might just be considered intentional. Oh wait, I want some paint cans to save my barrels. However, the beers are still not safe.
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