Dan

You can get the Smoothon products mentioned above from 4D Modelshop.
Not cheap either, but may compare favourably.

http://www.modelshop.co.uk/

Mike

2009/7/5 Dan Kelly <diquet@...>:
>
>
> On the topic of casting, i was in hobbycraft yesterday (I live in the UK,
> not sure if you guys have it in the US) and I saw they sell casting resin
> and RTV casting rubber. Its's REALLY expensie though! I bought a little pot
> of 2 part RTV silicone that is like a putty and when you mix the 2 parts you
> stick the master into it and then it sets in around 10 minutes! Good for
> casting bases and building components, but not so great for actual figures.
> I've ordered silicone, white metal, resin and all sorts of other putties and
> great modelling bits from www.sylmasta.com. Id reccomend them for anyone in
> the UK looking for casting kit 9might suply the US but not sure?). The guy
> who owns the company is also really helpful and gave me loads of hints and
> tips for using the stuff I bought.
>
> --- In 1listSculpting@yahoogroups.com, ptsuk <ptsuk@...> wrote:
>>
>> Yep I used it "back in the day" unless you are one cheap bastard like I
>> was I'd recommend going to smoothon's website or if you have a local tap
>> plastics in your area and picking up the RTV compounds they have. The
>> RTV auto tubes take way to long (a month for a full two part mold) to
>> cure completely. a 1/4 inch to a 1/2 inch thick half of a mold took two
>> weeks to fully cure, so a two sided mold was 1 month prep time. If it
>> didn't work out too and you opened up your mold too soon getting it off
>> completely and cleaning (even using a mold release of petrolem jelly and
>> mineral spirts) was a "iffy" prospect. I used to make them put them in
>> the root cellar and forget about them so i wouldn't fiddle with em, and
>> then when i made more i would "discover" the old ones and either do the
>> second half or crack open a new whole mold.
>>
>> The ONLY good thing about that stuff is that molds I made 10 years ago
>> haven't warped in the slightest, while the RTV from smoothon and tap
>> plastics were all stored by throwing them into a zip top bag piled on
>> top of each other, and ended up warping in about 3 years (i had them
>> seperated by parchment paper so they didn't stick to each other as well
>> as sprinkled with cornstarch) I now use one of those organizer drawer
>> units with cut foam core sheets separating the layers. No warpage yet
>> and its been about a years time.
>>
>> -pt
>>
>> rempas2001 wrote:
>> >
>> >
>> >
>> > Folks,
>> >
>> > Has anyone tried the RTV gasket sealer sold in toothpaste tubes sold by
>> > auto shops to make molds? If so, any tips on using this product?
>> >
>> > Thanks,
>> >
>> > Steve
>> >
>> >
>>
>
>