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Post by mohs on Sept 9, 2020 19:06:57 GMT -5
Hi Guys Hope everyone is doing as well as can be under these extreme conditions At that going out business sale One of the best deals I got ( I think) were 3 Crystallite resin belts for a buck They are an 8” belts So I had to make bushing for my 8" expando That another story Anyway I smeared 14000 paste on the belt Slipped on the expando and, was happily polishing away on the purple jade. For only about 20 revolutions Then SNAP CRACKLE POP
Ha Old belts. The tape seam gave out, I been through this routine before. Had some minor success in the past adhering seams together. I seem to be good at that Anyway I'm trying the Gorilla Never used it before I'll be able to tell tomorrow if it hold So stay tuned and Hold ON
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herb
spending too much on rocks
Member since November 2011
Posts: 444
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Post by herb on Sept 10, 2020 8:53:02 GMT -5
I'd be very interested to hear of how your repair works. Or hear from anyone else whose tried to repair a belt. I have several vintage belts I got a good deal on at an auction years ago and 1 of them broke recently. Haven't gotten around to trying a repair myself yet, so I'd be interested to hear what works.
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Post by mohs on Sept 10, 2020 11:45:00 GMT -5
Thanks and best of processes to ya herb Happy to report the Gorilla is holding on ! Well preliminarily testing I just did about 15 minutes of polishing On various heartsTonhs Lot of revolutions The Gorilla is definantly up to the job I'll post a little later on my technique and process Of welding the seam together That a trick --but doable Mohz later …
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Post by mohs on Sept 11, 2020 12:15:50 GMT -5
I do believe the Gorilla was a fix I’ve use the belt quite a lot
The belt broke leaving one side of the tape in tact That usually how it goes
I made sure to rub the glue into the fabric of the belt using an exacto knife for that
and placed the belt between 2 granite flats w/ wax paper and apply pressure
the one thing I would do differently is allow the glue to get more tacky befor aligning the 2 ends
I went a bit fast setting the other top slab on Kind of got the seam off a little it tricky cause your working with a blind spot
anyway I think its good fix and I have 2 other of those belts if they break I got the gorilla fix on my back
1 dollar for 3 of those Crystallite resin belts is turning out to be a good deal
Those belts are expensive At least ten buck apiece I’d guess ...
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Post by mohs on Sept 11, 2020 12:18:57 GMT -5
It makes me wonder how the manufacture of these belts affix and adhere these seams together on the belt?
They must have heated fixture vice type gizmo...
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Post by knave on Sept 11, 2020 12:32:06 GMT -5
It makes me wonder how the manufacture of these belts affix and adhere these seams together on the belt? They must have heated fixture vice type gizmo... From time to time I work in a local 3M factory. Those processes are somewhat secretive. But I fixed a freezer that’s stored the glue/tape for the sanding belts, it is kept at -35°F.
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Post by knave on Sept 11, 2020 12:33:48 GMT -5
Haha Ed, I should behave myself. Leave room for others! Well I’m glad you’re back in the lapidary world that’s a day brightener!
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Post by mohs on Sept 11, 2020 13:08:38 GMT -5
Nah --that interesting info. Ev!
I'm off to look into buying step bit
but I used to weld band saw seams together
that was interesting process...
morhz later...
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herb
spending too much on rocks
Member since November 2011
Posts: 444
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Post by herb on Sept 12, 2020 8:32:08 GMT -5
So you press the glued seam together on a flat surface? What kept me from trying to repair my belt was worrying about a glue that is flexible enough to be bent to the curve of the wheel after it dried being flat. I think for most glues, flexing the connection would weaken the joint causing it to fail eventually. I do believe the Gorilla was a fix I’ve use the belt quite a lot The belt broke leaving one side of the tape in tact That usually how it goes I made sure to rub the glue into the fabric of the belt using an exacto knife for that and placed the belt between 2 granite flats w/ wax paper and apply pressure the one thing I would do differently is allow the glue to get more tacky befor aligning the 2 ends I went a bit fast setting the other top slab on Kind of got the seam off a little it tricky cause your working with a blind spot anyway I think its good fix and I have 2 other of those belts if they break I got the gorilla fix on my back 1 dollar for 3 of those Crystallite resin belts is turning out to be a good deal Those belts are expensive At least ten buck apiece I’d guess ...
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Post by mohs on Sept 12, 2020 9:27:49 GMT -5
That an interesting point herb
Next one I repair I may use my sanding block as base Which has a slight curved radius as a backing
Although the seam joint is a very short distance so I’m mot sure how critical that is
I also was concerned about the glue having flexibility, and perhaps, waterproof characteristics. I haven't ran this belt under water, yet.
An interesting aspect of the Gorilla glue is that the instructions state to dampen one end of the piece to be glued with water. I found that peculiar. It may indicate that the Gorilla as certain waterproof characteristics?
I also was concerned about the adhesive flexibility. In the past I repaired a belt using E-6000 epoxy. That epoxy is dries with a rubbery consistency. Its really good stuff….
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Post by knave on Sept 12, 2020 9:43:42 GMT -5
The gorilla glue is activated by moisture.
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Post by mohs on Sept 12, 2020 10:36:34 GMT -5
8” x 2" x 1-1/2” arbor hole expando. I bought this used from RockAZona for a couple bucks many years ago The periphery was a bit chewed up but the rubber is still soft and pliable It turned out to be a good deal and I’ve used it a lot. I just bought and crafted the bushing setup for it. Then I found my original rubber bushing. Ha ha
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Post by mohs on Sept 17, 2020 15:28:45 GMT -5
Hi Guys the Gorilla is tough stuff I made the mistake of adhering 2 heart halves together with 'the Gorilla’ (got to experiment) it was booger to get apart soaked in acetone hit with a chisel my other method is better yet looking for even better adhering solutions that can go through (notta to much) profile grind...
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Post by mohs on Sept 17, 2020 19:38:46 GMT -5
The gorilla glue is activated by moisture. right on Ev! that probably why Gorilla is bad for my adhering the halves together Grinding under water so it just increases the bond which is good but won't release easily altho that feature is good for other purposes like the belt plus I saw Gorilla tape and some 3-M tapes wonder how they work for the belts? obviously good if got the proper jig I saw a roll of 100grit S/C 2 1/2" wide paper must of been 20 yards worth for the expando at that going out of business sale they wanted 20 bucks which I thought was bit spendy especially being that didn't know how to seam the paper together ? anyway I have some other belts I might try the tape need to experiment and people have had success doppping a stohn w/ tape
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Post by knave on Sept 17, 2020 20:54:52 GMT -5
They have super glue tape now!
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nik
spending too much on rocks
Member since May 2019
Posts: 315
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Post by nik on Sept 19, 2020 6:26:39 GMT -5
I can say with certainty that the original gorilla glue is water proof and flexible. I have used it to glue brass sheet to wood while making tools for pottery, and never had one fail, in spite of soaking in a bucket of water or slip for weeks on end. I have also used it for bonding plywood to a slab of laminate bowling alley, and that survived for years with regular exposure to jet fuel, oils, and any solvent we commonly used in the hangar, up to and including acetone and MEK, not to mention the occasional tragedy of a coffee spill. My only suggestions for using it would be to be prepared for a bit of a mess, and if the joint is dimension critical, clamp very securely between waxed surfaces. Aside from things specifically meant to be a release agent, I have yet to find anything that it won't bond to.
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Post by mohs on Sept 19, 2020 14:26:17 GMT -5
Thanks @nic that good info
i'm really fascinated w/ adhesive/epoxies ect... they are amazing chemical bonding products
I also had good success with that Flex tape and putty as seen on t.v. - you tube not for rocks but the house is falling apart and I keep patching ha
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