--- In casting@yahoogroups.com, "mmitchell_houston" <mmitchell_houston@...>
wrote:
>
> I need to purchase at least 1 gal (about 5 lbs? or is it 10 lbs?) of tin-based
silicone mold rubber.
>
> I'm using masters that have already been molded once with this product:
> Douglas & Sturges SR-1644 tin cured elastomer polymers (shore A 40)
>
http://www.artstuf.com/shop/index.php?main_page=product_info&cPath=5_32&products\
_id=238
>
> It runs about $115 (plus shipping) for 1 gal.
>
> I'm looking for comparable products that (hopefully) I can find locally in
Houston, or have ordered for store delivery so I can cut down on shipping costs.
Plus, I prefer to buy locally when I can.
>
> ------------------
>
> Project Notes:
> I am making 25mm resin buildings for use with miniature wargaming. These molds
are production molds, so I need them to be sturdy enough to last through
multiple castings.
>
> - Tin (not platinum) based
> - I will be pouring open-topped, one-piece molds
> - There are few (if any) undercuts
> - I do have a vibrator for degassing
> - I do not have a vacuum pump.chamber
> - I do have an accurate gram scale
>
> I have used Alumilite products in the past, and Smooth On. I'm also wondering
about the Reynolds products (particularly their Mold Max 40"
http://www.reynoldsam.com/index.php?cPath=2_1113_1135&catdepth=1 or their OOMOO
30: http://www.reynoldsam.com/index.php?cPath=2_1113_1136&catdepth=1 )
>
> Any suggestions would be greatly appreciated.
>
> Mike
>

Hi Mike,

I also live in Houston and have been evaluating silicones. I've tried the
Smooth-on, Alumilite and Silicone Inc. I just got some in from MPK which someone
on this group suggested and am going to contact Sil-Pak which someone on this
group also suggested. Depending on what part of town you live in maybe we can
help each other. I'm testing 1 gallon sizes but will be ordering 5 gallon
containers shortly. If you are interested email me at cindy@...