Scary Sharp - proper way to attach sandpaper???

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Forum topic by Randy_ATX posted 02-17-2014 06:42 PM 892 views 1 time favorited 13 replies Add to Favorites Watch
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732 posts in 1260 days

02-17-2014 06:42 PM

Scary sharp is the only sharpening method in my budget at the moment (19yo college and 16yo kids).
What is the secret for attaching the sandpaper so that it doesn’t buckle/rip??? I first tried taping the top and bottom, that just loosens up, buckles and rips. I then tried spraying the back with a really tacky adhesive and that kept the sandpaper from moving but I ruined the glass – when it came time to swap out the sandpaper I couldn’t get the adhesive off the glass and the result was too rough to try and put new sandpaper on top of it. I just obtained a nice flat piece of granite this weekend so I would like to know the best way to try this again. Is there a better backed andpaper to use? I’ve been using the standard full sheets (paper backed?) one can pick up at borg and cutting them in half. Thank you!

-- Randy -- Austin, TX by way of Northwest (Woodville), OH

13 replies so far

View 7Footer's profile


1466 posts in 767 days

#1 posted 02-17-2014 06:45 PM

Haven’t done it myself but heard many people say they just used a spray bottle full of water and spritz the granite/glass and the friction between the paper and flat surface holds it for that sharpening session.

-- I'm so official all I need is a whistle --

View shipwright's profile


5516 posts in 1616 days

#2 posted 02-17-2014 06:49 PM

3M PSA backed film from
Use it in half sheets on 6”X 12” glass like this.

Works great !

-- Paul M ..............If God wanted us to have fiberglass boats he would have given us fiberglass trees.

View TiggerWood's profile


197 posts in 425 days

#3 posted 02-17-2014 06:49 PM

Like 7Footer said, I get wet dry sandpaper, spray the bottom with water, and mat it down on the granite.

View TerryDowning's profile


1040 posts in 936 days

#4 posted 02-17-2014 07:30 PM

I use 3M 77 spray adhesive (sprayed on the back of the paper) with my granite tile. I have an old chisel to help scrape off used paper/adhesive. Razor blade scarper works well too.

While I do have the eze lap diamond stones now. I still use sandpaper on granite for coarse grinding work (220 and more coarse when needed).

-- - Terry

View screwikea's profile


10 posts in 759 days

#5 posted 02-17-2014 07:33 PM

Spray adhesive—there are a bunch on the market, and big box stores carry a few.

When you get done with it, pull the sandpaper off of the glass, and use mineral spirits to clean it up.

That’s how I always do it!

View SCOTSMAN's profile


5714 posts in 2404 days

#6 posted 02-17-2014 07:33 PM

A hammer and five six inch nails is what I use straight into the granite works nevery time.Alistair

-- excuse my typing as I have a form of parkinsons disease

View CharlesA's profile (online now)


2019 posts in 616 days

#7 posted 02-17-2014 07:39 PM

Mineral spirits make short work of spay adhesive.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

View b2rtch's profile


4391 posts in 1867 days

#8 posted 02-17-2014 07:40 PM

I used Klingspor self adhesive sand paper

-- Bert

View bigblockyeti's profile


2005 posts in 539 days

#9 posted 02-17-2014 07:41 PM

I use contact cement, costs a fraction of what they want for spray adhesive and lasts three times longer. It does take a few minutes as you have to wait for both surfaces to get tacky before putting the paper to your substrate. Usually peel off what I can and scrape the rest off with a razor blade.

View OSU55's profile


389 posts in 808 days

#10 posted 02-17-2014 07:55 PM

I use the 3M 77sprayed lightly on the back of the paper. Amonia or glass cleaner will remove the adhesive. Spray the amonia on fairly heavy and let sit a few minutes. The longer it sits the easier it gets. Wipe off with paper towel. I use a razor scraper for stubborn spots

View Fred Hargis's profile

Fred Hargis

2300 posts in 1312 days

#11 posted 02-17-2014 08:20 PM

Yeti, I hadn’t though of contact cement….do you have any trouble getting the sandpaper flat against the glass? I’ll have to give that a try.

-- Our village hasn't lost it's idiot, he was elected to congress.

View Randy_ATX's profile (online now)


732 posts in 1260 days

#12 posted 02-18-2014 04:29 AM

Thanks guys – I appreciate all the input. For some reason I didn’t think of using solvent to try and clean the glass, only razors which couldn’t remove the adhesive. I will try some of these suggestions.

-- Randy -- Austin, TX by way of Northwest (Woodville), OH

View bigblockyeti's profile


2005 posts in 539 days

#13 posted 02-22-2014 04:57 AM

No problem getting the paper flat, just have to carefully start at one end and kind of roll the paper onto the glass. Also have a silicone roller, sort of like a J-roller to provide pressure for the bond, only nothing will stick to it unlike my J-roller.

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