jamesp
Cave Dweller
Member since October 2012
Posts: 36,169
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Post by jamesp on Nov 7, 2015 8:12:59 GMT -5
I also bevel the inside of the pipe. Some joints caught rocks in a bad way. Jammed them like no tomorrow. Mainly the joint at the bushing end. Amazing how jammed the rocks got. This was a double reduction barrel. 8"-6" bushing, then 6"-4" bushing. I had to trash this design dangit. Too many internal steps. it was a super rock catcher. But notice the two rocks jammed at the pipe, those are jammed because I did not bevel the pipe. I also grind the stop ring inside the coupling off. it can be seen in the above photo. Glueing or attaching anything to the inside of a tumbler barrel used for polishing is tricky. If it delaminates, it makes cleaning impossible. And once the barrel is closed up it is hard to find Leprechauns to go inside and fix the situation. I only recently bought a vibe, so I had to polish in these barrels. So they were built to be cleanable. So the top barrel in the below photo was trashed for polish, but fine for coarse only. Love the 6 inch opening though. Bottom barrel below is fitted with a doable 8"-4" bushing, just had not glued the 4 inch pipe stub into it. It also got a sawed off coupling on the bushing side. Best not to shorten the couplings, short glued joints tend to leak. Ha, made lots of mistakes. But got it down to bullet proof finally with the 6 inch barrels, and the 8 inch ones for that matter.
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Intheswamp
Cave Dweller
Member since September 2015
Posts: 1,910
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Post by Intheswamp on Nov 7, 2015 17:02:40 GMT -5
I don't have my bushings here at the house to look at (at the office), but the best I recall they don't have those cavities on the inside....the inside of the bushing is more of a sloped/domed shaped culminating in the stop where the pipe comes in from the outside...a fairly smooth, fluid (I had to say it!) design. But, there are cavities on the outside perimeter of the bushing...it won't roll against a stand-off roller/wheel very well so I will have to position the rounded end cap against the stand-off wheel.
I beveled the 4" pipe I used for my small barrel so I'll do that again with the 6" ones...it makes sense.
So far the ShoeGoo is holding in the 4" barrel, but has only had two loads of coarse grit through it. I'm sure the 6" barrels will be tougher on the rubber/adhesive. 4" compared to 6" doesn't seem like much when you're talking about it, but when you put them side-by-side there's a BIG difference!!!
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Post by captbob on Nov 7, 2015 17:43:52 GMT -5
How about jamming a round cut piece if wood in the end cap? Would have to be cut to size. The barrel PVC itself would hold the wood in place when glued in. Wood will expand when wet for even tighter fit.
Gonna lose a little space in the end of the barrel, but the wood should keep the cap from ever wearing.
Heck, if you have a way to cut sheet metal well, that would work even better and could be much thinner.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,169
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Post by jamesp on Nov 7, 2015 19:04:02 GMT -5
I took a whoopin on that problem. Jihadal attitude. Swore no more efforts.
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