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Accidental Discovery - Scary Sharp

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Accidental Discovery - Scary Sharp

#1

Accidental Discovery - Scary Sharp

Richard Gillespie

>I've been using the scary sharp method for the past 18 months. I use 3M's 77 spray adhesive to attach the 10 sheets of sandpaper to the 5 pieces of glass I use. Two days ago, it was time to change all the sheets again, a chore I dread. The shop was cold and the heaters hadn't fully warmed it up yet. Unlike the usual results of the sheets being difficult to remove from the glass, the sandpaper came off the glass in full sheets, very easily. All I had to do is, remove the old adhesive from the glass and attach the new sheets. Made me wonder was it the cold or had the adhesive dried out.

In working on some block plane irons, I wore out the two largest grits. So, as an experiment, I stuck the the glass plate in the freezer over night. Sure enough the sandpaper came off just as easily as the day before.

Thought I'd share this. If this has already been discussed, sorry. I did a search and it didn't show anything.

Re: Accidental Discovery - Scary Sharp

#2

Norton 3X/Windex/Razor blades

Dave (Arlington, VA)

>Hi Richard -

I scary sharp too (even though I've been experimenting some with waterstones) - and I used to have the same problem. I used standard Norton sandpaper from the Borg. Then when I was ready to remove the sandpaper I started spraying what was left after initial removal with Windex. I let it soak in for a bit and then scraped it off with a straightedged razor blade. Pretty easy.

Then, later, as an experiment, I shifted over the to the new Norton 3X paper (more expensive but it lasts longer). Since then I haven't had any problems with the paper being difficult to remove. Usually it just peels off. I still use the Windex to clean the adhesive off the glass, but rarely need the razor blade. I can just work it off with my finger tips in no time - and then wipe it off with a paper towel and I'm ready for new sandpaper.

My GUESS is that whatever is used to make the new Norton paper last longer also effects the backing of the paper - making it easier to remove.

Of course, that's just my experience. Don't know how it will work for others.

Regards -

Dave

Re: Accidental Discovery - Scary Sharp

#3

Re: Accidental Discovery - Scary Sharp

Kevin French, Antrim NH

>Rich

You're using too much spray. Spray it lightly, let it set a minute, and use a roller to set it.

They peel right off, I scrap with a razor, and wipe it off w/mineral spirits.

Might be the the residue of the MS left on the glass but it works and the sheets stay in place.

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