jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Dec 20, 2019 15:49:25 GMT -5
End roller installed. Beveled the wheel on a grinder, 2 wood screws holds it fast. 8 inch HDPE barrels. Ready to tumble for 10 more. This rig will coarse grind with metallurgical grade silicon carbide. Cheapest and fastest way to coarse grind 6 inch HDPE
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Post by HankRocks on Dec 20, 2019 16:01:32 GMT -5
End roller installed. 8 inch HDPE barrels. Ready to tumble. Looks good!!, One thing, you don't think that end roller is going to cut into the barrel after a while. It appears to be hitting the roller on that sharp edge. Maybe you could just raise the end roller a bit. Did you mention somewhere what the capacity of each barrel is? Henry
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Dec 20, 2019 16:47:00 GMT -5
End roller installed. 8 inch HDPE barrels. Ready to tumble. Looks good!!, One thing, you don't think that end roller is going to cut into the barrel after a while. It appears to be hitting the roller on that sharp edge. Maybe you could just raise the end roller a bit. Did you mention somewhere what the capacity of each barrel is? Henry The last roller was jammed and didn't cut a groove Henry. HDPE is mean stuff and like slick teflon. You can even run a 6 against an 8 inch barrel without scuffing. I will eventually measure their capacity. Main concern was making a step down of sizes. I made 8 barrels, four-6" and four-8", each about 15% smaller than the other so the contents could be transferred to the next smaller barrel without adding rocks during coarse grind. The biggest 8" must hold 20+ pounds, biggest 6" must hold 15+ pounds. I prefer the gentle 6" barrels at a fast clip.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Jan 4, 2020 12:24:59 GMT -5
This is the rebuilt tumbler rolling 10 pounds of glass in a 6 inch barrel. Note how the pulleys turn slow due to the 700 rpm 1/8 hp motor. However the barrel is turning at a fair clip of 38 rpm.
If this was a 1725 rpm motor the big pulley would have to be changed from the cheap small 7 inch pulley to an expensive large 17 inch pulley to get 38 rpm. And be noisier in general due to the faster turning motor.
This unit can roll a 40 pound barrel with a minimum sized motor. Or run two shorter barrels because of the long shaft.
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Post by 1dave on Jan 5, 2020 2:36:02 GMT -5
That is noisy! Almost as bad as my snoring.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,155
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Post by jamesp on Jan 5, 2020 4:10:14 GMT -5
That is noisy! Almost as bad as my snoring.
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