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PostPosted: Fri Jul 19, 2019 4:54 pm 
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As I was using Klingspor 3x21 sanding belts today, after about 45 seconds to one minute of use, the splice separated. After 3 belts, I think I know what the cause was. The belts are at least 15 years old, maybe 20. I bought in quantity at the time. I'm thinking the heat from friction loosened the glue at the splice. I've seen this before, but it was with new 3M belts. I've not had a problem with Klingspor belts when they were first purchased. Has anyone else had this experience? Am I right thinking it's because of age?
Thanks.
Dan


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PostPosted: Fri Jul 19, 2019 10:25 pm 
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Location: Albuquerque NM
I had the exact same problem, also with Klingspor belts, also 15+ years old. Yes, it's almost certainly age. The Klingspor folks politely laughed when I told them the belts were at least 15 years old. Their guarantee is something like 1 year.

If you have a lot of them and really want to salvage them, I found the best approach is Tyvek and water-based contact cement. It's actually not that messy, fussy, or time consuming. Cut a piece of Tyvek a little wider than the belt and about 4" long. Coat it and the belt with contact cement. Let dry according to instructions, then apply the patch/reinforcement. The water-based contact cement has a much higher temperature range than epoxy or super-glue. Mainly I use this approach to splice wraps for my drum sander that were self-destructing near the clamp for some reason that has resolved itself.


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PostPosted: Sat Jul 20, 2019 7:03 am 
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drstrip, thanks for the information regarding the repair of the belts. I suppose any house wrap product would work? I'll keep my eye out for a scrap, and I'll retrieve my belts from the trash!W
thanks again.
Dan


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PostPosted: Sat Jul 20, 2019 8:25 am 
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I suspect all sorts of materials will work. I tried a couple of things I had lying around the garage and Tyvek worked best, but as you hint, anything similar in terms of high-strength, thin, and slippery should do.


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PostPosted: Sat Jul 20, 2019 5:53 pm 
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Joined: Mon Jul 11, 2005 12:01 am
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Location: Linwood, Ma, USA, The Center of the known universe
I had the same problem with belts I got from dad before he died 20 years ago. I tried using some last year and they came apart. Don't know where they came from but I just tossed them all, about 20, and bought new.


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