Re: [ATM] tile tool sticking

[Mike Lockwood <melockwo@uiuc.edu>]

Hi,

I think I've posted this before, and I thought it was in my 
mirror-making web page, but I didn't see it.  I should add it.

I don't seal my tile/hydrostone tools, and I pre-soak them in water 
before I start working with them if I haven't used them in the last 24 
hours.  Otherwise, when you start grinding the tool sucks up all of 
water very quickly.  This is especially bad if you're using an 
abrasive smaller than 25u, because the tool then locks itself to the 
mirror!

The good news is, soaking in water should allow them to be separated. 
  Dunk them in, sit back, have a tasty beverage, and watch the tool 
bubble away.  (Hyrdrostone tools in water make a lot of bubbles, and 
you can hear them - sort of a high pitched whine.)  If he/she sees 
this, your spouse might think you are easily entertained, but in 
reality you're just on a break.

I've never had a hydrostone tool go bad, and some have been soaked 
many, many times.  The combination of durability when exposed to water 
and the ability to fill small spaces (between) with few air bubbles 
(to later trap grit) makes hydrostone a great material.

	Mike Lockwood


ArtfulBodger wrote:
> Speaking from experience with fields other than mirror grinding, I'd 
> bet a nickel that shellac would be best.  It drives into a surface 
> better than anything else I know, especially when diluted with 
> alcohol.  A thin mix will soak right into plaster and then dry very 
> quickly.  Couple of coats should do it (but don't use old shellac, 
> which never dries right).


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