Re: [ATM] start...tool....

["Jim" <jim@idexer.com>]

When I was taught mirror making (30+ years ago) we used what was called
anchor cement and this stuff dries hard like dental plaster. They use
it for such things as to secure toliet bolts to the floor and you can
buy in big boxes at hardware stores like ACE real cheap.

----- Original Message ----- 
From: "Charles Mitchard" <charlesmitchard@iinet.net.au>
To: <atm@atmlist.net>
Sent: Sunday, April 09, 2006 10:06 AM
Subject: Re: [ATM] start...tool....


> real plaster of paris is ok, wall plaster isnt, dental plaster is
> excellent, cement works but I dont trust the sand grains.
> Dental plaster comes in a few grades depending upon what is required
> but
> can be expensive. (you must follow the directions explicitly for best
> results)
> However, names and compostion of these products varies around the
> world so
> get what you can and see if it melts or dissolves in water. If that
> happens
> use something else.
> Charles
>
>
>>Saqib Sajjad wrote:
>>
>> >
>> >first...i am thinking of making the tool with plaster of paris.
>> >is it ok? is there any better choice? any suggestions?
>> >
>> >
>> >
>>I have never tried that but I think you must seal it.  It will come
>>apart in water.  You can do a quick test your self to see.  I think
>>dental stone is something like plaster of paris with Portland cement
>>added.  I think the ingredients for some products like hydro-stone
>>have
>>been listed here.  You could check the archives.
>>
>>One of the Ken's.....
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