Re: [ATM] Material for Tool

[Jeff Rowe <jeffrowe@austin.rr.com>]

Dave;
My concerns for your choices would be how rigid and water tight they 
are. Another concern would be adding sand to the mix. I have made a 20" 
flat tool recently out of white Portland cement, but I can't give you a 
good report, not having used it. It does seem to be less rigid/stiff, 
(minor surface cracks as well) than Hydrostone. One thing you might 
consider is including your tile in the pouring of your tool, as opposed 
to gluing it on after the fact. Hydrostone might be cheaper in the long run.
Best
JR

Dave and Connie wrote:

>I have been looking around but have not come up with a good local source 
>for Hydrostone or Hydrocal.  I have a dentist appointment at the end of the 
>month so I can probably get a pointer to dental cement then (the kid's 
>orodontist doesn't use it, already checked).
>
>I have 1/2 gallon of so of boat building epoxy laying around to seal things 
>so they can be made waterproof.
>
>Here is what is easily available:
>Plaster of Paris
>USG #1 molding or casting paster - store wasn't sure which
>Dunhams wood putty
>Portland Cement - $10 / 90 pounds!
>Hydraulic Cement
>Sand Mix Concrete
>Concrete mix - aggregate is probably too big.
>
>Which of these are a good or bad idea?  I have found use of Plaster of 
>Paris and Dunhams mentioned on the net.
>
>Or should I just bite the bullet and get the hydrostone mail order or wait 
>and talk to the dentist?
>
>My guess is that this is a lot like boat building and beer brewing - relax, 
>they all work fine.
>
>Dave
>The blank is in the mail....
>
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