How do you put sandpaper on your 9" disc sander?

Fish30114

Fish30114

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Jan 5, 2014
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I recently got a Tru Grit table and disc with a 1.5 hp motor and VFD from Jose at Pheer--I really like the setup with the built in table--I also like the blue anodizing of the tru grit setup. What I don't know how to do is how to put sandpaper on the 9" disc??? I have read that a standard sheet of paper can be used, but I'm not sure how--I was thinking of using some 3m #77 spray adhesive and sticking sheets of sandpaper on there and trimming them until the disc is covered--any advice direction would be welcomed and appreciated.


Thanks--Don
 
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PSA discs from super grit. Using the spray adhesive and sheets got very irritating, very quickly especially when it kept pulling the glue up or leaving paper.


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Most knife makers use Feathering disc adhesive but some use the 3M spray on disc adhesive. The spray on stuff has to be cleaned off with acetone or similar solvent while the feathering compound can be wiped off with off with a citrus based cleaner like "Blaster". I use both adhesives and both work. I buy hundreds of sheets of sandpaper at a time and this is the only way to afford frequent sandpaper changes. Larry
 
I use the feathering adhesive. It works great. If you put it on right, you can change paper quickly, and only add more glue occasionally.
 
Thanks gentlemen, I'll be trying some of both approaches, just ordered some PSA discs from Tru Grit and some feathering adhesive from Amazon.

Regards--Don
 
This works for me, but you have to have good sandpaper.
I actually had to do this tonight so I took a couple pics.







Viola!
Thanks Nick Wheeler!
Save the scraps too.
Edited to add. I looked for the feathering disc adhesive locally and couldn't find it. I was going to order it on the internet, but this stuff did the job. If the build-up gets too thick, I take it off with some acetone.
 
This works best if you put a rubber or cork surface on top of the metal disc. Use contact cement for this. I use 1/16 inch neoprene sheet. The softer surface makes the sanding surface more agreeable. Less chatter.
 
https://www.freemansupply.com/produ...s-abrasives-and-accessories/latex-disc-cement

^^ This is what you want -- Freeman Disc Sander Cement.

PSA discs seem like a good idea, but they tend to be a pain to peel off and leave a lot of residue that takes a while to clean. Freeman disc cement, on the other hand, is strong enough to hold your disc on tight, but it tends to release all at once. Pretty much every pattern shop uses this stuff on their disc sanders.
 
I've been happy with 3M Repositionable 75 Spray Adhesive.

As for needing to clean it off with acetone, while I'm sure I'll have to clean the disk off eventually the adhesive mostly comes off with the paper leaving the disk pretty clean.
 
i use the feathering adhesive in the tube, i put it on with my finger with the disc spinning. the spray makes other things sticky and messy.
 
woodster said:
i use the feathering adhesive in the tube, i put it on with my finger with the disc spinning. the spray makes other things sticky and messy.
Click to expand...

It does tend to overspray sometimes, but you don't have to spray it every time. The feathering disc adhesive seems to be the best. Sucks that it was discontinued around me everywhere.
 
catalytic said:
https://www.freemansupply.com/produ...s-abrasives-and-accessories/latex-disc-cement

^^ This is what you want -- Freeman Disc Sander Cement.

PSA discs seem like a good idea, but they tend to be a pain to peel off and leave a lot of residue that takes a while to clean. Freeman disc cement, on the other hand, is strong enough to hold your disc on tight, but it tends to release all at once. Pretty much every pattern shop uses this stuff on their disc sanders.
Click to expand...

I can't find where I can buy this stuff Catalytic--I asked for quote from that site--maybe if I get one I'll try some--

Josh Rider, thanks for the lead and Pics, I just ordered several cans from Amazon--appreciate it.

Thanks to all for the input, I'll file it all away.
 
Fred.Rowe said:
This works best if you put a rubber or cork surface on top of the metal disc. Use contact cement for this. I use 1/16 inch neoprene sheet. The softer surface makes the sanding surface more agreeable. Less chatter.
Click to expand...

I'm going to look into that Fred--thanks for the input!
 
I've learned so much from watching Wheeler's vids, is it nitpicky to ask whether there's any advantage to trimming the sandpaper from the top rather than from beneath? I use a sharp box cutter and prefer to cut paper rather than rocks, but always wonder if I'm missing something, since Nick doesn't seem to do anything without considering what's best.

The only drawback I've found with using cork or other membrane as a cushion is that if you do catch the edge and accidentally cut the sandpaper and the cushion, you have to replace both, which is a pain.
 
I have a Rod Nielsen magnetic disc grinder that has a variable speed. I have six or seven disks for it. All have a 1/8" cork disc I have applied with the 3M feathering disc . I then apply the 3M feathering disc cement again and use the sheets of sandpaper. I am trying not to scrimp on the quality of these but am still searching what is best. A friend maker has suggested to go to the PSA discs. I will try these of course. I am now into also using some diamond coated discs that are common in lapidary work. They are sort of impressive But I need more time with these.
Frank
 
Frank, that is interesting to be sure, I'm very curious about the diamond coated discs--I have recently begun experimenting with making scales out of and with rock in then--alumalite with small semiprecious stones in it--so I would be very curious as to how you do with those. I think I'm going to buy a couple of Nielsens magnetic discs just to keep different levels of sandpaper available without having to strip my disc each time I want to change grits.
 
Fish30114 said:
I can't find where I can buy this stuff Catalytic--I asked for quote from that site--maybe if I get one I'll try some--

Josh Rider, thanks for the lead and Pics, I just ordered several cans from Amazon--appreciate it.

Thanks to all for the input, I'll file it all away.
Click to expand...

Just give them a call 800-321-8511 they are a pattern/mold maker supply in Ohio that has been around forever. It was $20 for a quart (lifetime supply) a few years ago -- has probably gone up a few dollars since then.
 
what are you guys using for sandpaper? the few pix are of basic AO. does anyone use silicon carbide or zirconia? I have an 8" and use silicon carbide, zirconia, AO, and ceramic PSA discs which cost between 25 and 40 cents each. curious about 9" but only if I can keep the costs the same.
scott
 
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