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Hook and loop sanding disc (Read 1,858 times)
 
Freddie Hicks
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Hook and loop sanding disc
Jun 10th, 2011 at 3:40pm
 
I've not been in my shop much in the last few years, a bad hip and then a replacement, so my sanding discs got old and the hook and loop is coming off. Does anyone have a tip to refresh the glue that holds the Velcro on?
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JimQuarles
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Re: Hook and loop sanding disc
Reply #1 - Jun 10th, 2011 at 3:43pm
 
I've used a bit of CA.  CAREFULLY  Here in Phoenix, the adhesive doesn't last for too long.

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David Hamann
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Re: Hook and loop sanding disc
Reply #2 - Jun 10th, 2011 at 11:39pm
 
what about contact cement??  would that work??
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Don Davis
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Re: Hook and loop sanding disc
Reply #3 - Jun 11th, 2011 at 6:58am
 
Freddie Hicks wrote on Jun 10th, 2011 at 3:40pm:
my sanding discs got old and the hook and loop is coming off


I've had the same problem... bought a large supply of sanding discs several years ago then didn't get to use them for a long time. Haven't found a solution for refreshing the adhesive, so I just set them aside to use for hand sanding. Doesn't everyone often need just a small piece of sandpaper? It beats cutting up full sized sheets.
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JimQuarles
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Re: Hook and loop sanding disc
Reply #4 - Jun 11th, 2011 at 11:40am
 
Don, if you are talking about Pressure Sensitive Adhesive disks, you are right.  When that adhesive dries out, it is gone.  I wonder if the tacky spray glue used for temporary attachment would work.  We were talking about Velcro backed paper where it is separating.

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Jim Silva
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Re: Hook and loop sanding disc
Reply #5 - Jun 11th, 2011 at 2:14pm
 
Just a thought but I've had separation occur when I build up too much heat in the disk. How about laying it sandpaper side down and ironing it to reactivate the adhesive? Assuming your wife doesn't see you do it it might be worth a shot. smiley=thumbsup.gif
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JimQuarles
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Re: Hook and loop sanding disc
Reply #6 - Jun 11th, 2011 at 3:15pm
 
Heat is what caused the glue to fail, and should not reactivate it.  Besides, the heat can melt the Velcro.

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Dale Gillaspy
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Re: Hook and loop sanding disc
Reply #7 - Jun 11th, 2011 at 7:34pm
 
Depends on how many are bad, but it might be more trouble than it is worth. I know money is a concern a lot of times, but I would tend towards using it as hand held paper and just buying  new.
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Re: Hook and loop sanding disc
Reply #8 - Jun 11th, 2011 at 10:05pm
 
I've used contact cement with mixed results. I haven't had much of a problem with the Velcro loops coming off the sandpaper itself, but I'm still looking for a good glue for reattaching the Velcro hooks to the sanding pad.

JimQuarles wrote on Jun 11th, 2011 at 3:15pm:
Heat is what caused the glue to fail, and should not reactivate it.  Besides, the heat can melt the Velcro.


Um, if it's any type of hot glue, there's a good chance it could be reactivated with heat. (Hot melt glue, hide glue, etc.) Not saying that sanding disks use a hot glue, but just because heat loosens a glue it doesn't mean heat can't reactivate it. You are right about melting the Velcro, though. Wink
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Don Davis
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Re: Hook and loop sanding disc
Reply #9 - Jun 12th, 2011 at 8:17am
 
JimQuarles wrote on Jun 11th, 2011 at 11:40am:
Don, if you are talking about Pressure Sensitive Adhesive disks, you are right.  When that adhesive dries out, it is gone.  I wonder if the tacky spray glue used for temporary attachment would work.  We were talking about Velcro backed paper where it is separating.

Jim, I was referring to velcro. I haven't ever used psa.  My old discs were stored in an un-heated, un-airconditioned garage for 6 or 7 years or more...and our temps vary from 100+ to low teens on down to near zero. Usually with fresh discs, it is the heat that causes them to separate, but these just go flying almost immediately upon contact with the wood. So, like I said... at least I have a great supply of small bits. I now have a new supply from Vince, and they are great!
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Re: Hook and loop sanding disc
Reply #10 - Jun 12th, 2011 at 9:56pm
 
I got some bad disc a while back that separated as soon as I hit the wood. I cut a really small hole in the tip of a Hot Shot super glue bottle tip and put a little glue in a circle very little glue but I finished those disc up about 4 or 5 months ago.
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Glen Perye
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Re: Hook and loop sanding disc
Reply #11 - Jun 13th, 2011 at 5:34am
 
3M makes a sanding disc glue it is used in auto body work, you spread it on the sanding pad on the say orbital sander and then add the plain backed sand paper. It works for a number of discs then you have to reapply. After a number of applications you do have to clean the pad on the sander of the gunk/junk on it and then reapply the glue. I will look and see if I still have a tube in the shop.
It works well with the pneumatic sanders. smiley=thumbsup.gif
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Glen Perye
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Re: Hook and loop sanding disc
Reply #12 - Jun 13th, 2011 at 9:39am
 
Ok here is the info It is 3M,Feathering Disc Adhesive type 2 part#08051 5 fl.oz

You spread the adhesive around with a spent disk and wait till it is dry but tack and will not transfer to disc. Then you apply with hand pressure.
When the adhesive has lost tackiness you put another coat of the adhesive on.
It generally lasts for a number of discs.
It will work with rubber,plastic,metal backing pads along with paper or cloth discs.
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JimQuarles
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Re: Hook and loop sanding disc
Reply #13 - Jun 13th, 2011 at 11:36am
 
That basically changes the pad to a PSA.  We were talking about Velcro disks that have had the Velcro separate from the sandpaper.  A permanent adhesive is what is needed.

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Glen Perye
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Re: Hook and loop sanding disc
Reply #14 - Jun 13th, 2011 at 6:21pm
 
That may be so but it would do away with the problems of the hook and loops plus you can use regular papers plus the glue is always fresh.

A very strong adhesive that is used in making up leather goods and  leather drive belts is called barrage cement it is a contact type adhesive.
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