Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 16:32:19 GMT -5
As you all know I bought a "Poly" polisher ...I was taking the "bump" wheels off and the left wheel came right off,no problem... I'm having trouble with the right wheel,yes I know it's left handed thread,the nut is off and so are the set screws on the backside of the wheel...Still solid..!!! Am I doing something wrong on the removal of the wheel? I have the 8" expando wheels to replace the old "bump" wheels,but they are also different arbor size than the Poly shafts.. Are there shims that I can buy to make a fit also??? New at this game,with the Poly....Any answers would be great!!!!!!!! Thanks all..............
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blackout5783
starting to spend too much on rocks
Member since November 2011
Posts: 248
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Post by blackout5783 on Oct 21, 2014 16:48:39 GMT -5
First the easy part, you can get plastic bushings for the expando drums at most lapidary supply places. I know Kingsley carries them and I'm pretty sure JSGems does as well. For the stuck bump wheel, have you used any penetrating oil (like PB Blaster or Liquid Wrench) on it yet? That may help free it up. FWIW, I have had good luck with the WD40 "specialist" penetrating oil. Used it on rusted exhaust bolts on my car and they came off with just a little effort. This is not the regular WD40 in the blue can (which doesn't work for something like this), it's in a grey can with a yellow nozzle and button. Failing that, there's always the big red wrench.
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Post by jakesrocks on Oct 21, 2014 17:28:14 GMT -5
Mike, after using a penetrating oil and letting it have time to penetrate, see if you can devise a way to hang the whole arbor by the edges of the bump wheel. Once you have it hung, tap on the end of the shaft with a leather mallet or block of wood and a steel hammer. It might take a few stout whacks to get it started moving.
Also, stand the arbor on end when you put penetrating oil on it, so the oil doesn't just drip off. You could also try heating the hub of the bump wheel with a hair dryer before using the penetrating oil.
Lefty loosey, righty tighty on the right end. Righty loosey, lefty tighty on the left end.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 17:38:33 GMT -5
Yuppers added the P/oil,maybe will let it set a bit...Thanks all....
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Post by mohs on Oct 21, 2014 18:09:21 GMT -5
is this re -furbishing project? is the poly really in used state ?
that ancient grit can be cemented bad I like the idea of hanging the arbor by he wheel and whacking it. O ever so gentle ha ha
Are you concerned about saving the wheel? if not? you know what to do angle grind
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 18:11:34 GMT -5
is this re -furbishing project? is the poly really in used state ? that ancient grit can be cemented bad I like the idea of hanging the arbor by he wheel and whacking it. O ever so gentle ha ha Are you concerned about saving the wheel? if not? you know what to do angle grind LOL,Don't care about the "bump" wheel Ed..Thought of that idea already...
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 18:12:25 GMT -5
Just ordered the bushings from Kingsley North,should be here by Saturday...
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Post by johnjsgems on Oct 21, 2014 19:22:12 GMT -5
A great thing to have is a roll of plumbers sand cloth (sold anywhere copper fittings are sold). Polish all exposed shaft before breaking wheel loose. Makes removal much easier. Sawzall was always our last resort in HVAC trade. Be careful you don't damage bearings.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 19:34:49 GMT -5
No room with that bump wheel on there for any sanding... I'll just soak it in WD-40 "specialist" oil....It should come right off.... Again thanks all.............I knew I could count on ya'!!!!!!
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spiritstone
Cave Dweller
Member since August 2014
Posts: 2,061
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Post by spiritstone on Oct 21, 2014 19:46:48 GMT -5
If its rusted on you can also pour some pop "coke" on it and wrap a rag around. The acid in the pop eats away the rust.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 21, 2014 21:18:46 GMT -5
I'm stubborn,I'll get it off,one way or the other!!!!! LMAO
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Post by jakesrocks on Oct 21, 2014 21:23:18 GMT -5
I might know where ya can get some C-4. ROGLMAO
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 23, 2014 15:06:19 GMT -5
Tried it today....Had it soaking for a few days...With a bit of help,it came off (wiping brow) LOL sanded the shaft after that,nice and smooth now..
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Post by captbob on Oct 23, 2014 15:23:13 GMT -5
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 24, 2014 9:04:22 GMT -5
Now I was going to rebuild the bench the polisher sits on,but just reconditioned the old one with 3" and 1 1/2" screws.....LOL,it's not loose and wobbly anymore... Have been taking pics of this project,as I go....Will post them after I finish..
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Post by Rockoonz on Oct 24, 2014 14:31:43 GMT -5
Will be nice to see the project progress. I was going to pipe in and add that if the bump wheel was aluminum then careful use of a torch to heat and expand the aluminum often helps, but it looks like you won the battle without fire
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Post by mohs on Oct 24, 2014 14:43:34 GMT -5
but it looks like you won the battle without fire and angle grinder double thumbs !! from your all thumbs pal mostly
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,709
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Post by Fossilman on Oct 26, 2014 9:09:19 GMT -5
I now have to mount the motor on a separate area from the bench,which means finding more room,which I haven't got...LOL
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,352
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Post by quartz on Oct 26, 2014 22:02:08 GMT -5
I have mounted all our smaller machines and their drive motors on a board or piece of well sealed plywood, put non-skid shelf liner on the bottom side. Makes 'em portable, works well here.
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Post by jakesrocks on Oct 26, 2014 22:57:58 GMT -5
Dang Mike, I gotta get busy to catch up with you. I just scored my 4th 8" Poly arbor. Got 8" bump wheels & grinding wheels coming out the old wazoo.
The belts for those Poly arbors can come out the bottom too. Mount the motors on a shelf under the arbors. Just cut a slot in the bench for the belt to drop through.
I just bought left & right hand thread chasers to clean up the threads on both ends of my arbors, and new stainless nuts for both ends.
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