Does anyone what Brick & Mortar store that would sell RTV? I have tried all the home improvment stores in my area but no luck.

I use a product called por-a-mold that I buy at Dick blicks art supply store..

here is a link to the product on dick blicks..

por-a-mold at dick blicks it can be ordered online..

its made by synair



synair por-a-mold home page

anyways its a one to one 2 part system that I find very easy to use.

RTV and resin seem to be an "art store" item, not a "hobby" or "DIY" item.

Check the better stocked model railroad stores in your area, if there are any. That's where I've had my best luck finding RTV and resin, other than online. Usually they seem to carry Micro Mark brand (at least here in western Pennsylvania.)

Once cured, Micro Mark's RTV (the blue and white stuff that makes light blue colored molds) is a little softer than others I've used--thus limiting slightly the number of casting before the mold begins to become worn or damaged--but it its fantastic for capturing detail.

It may cost a little more in some stores than what you can find online, but at least you won't be paying for shipping (RTV's weight can really take a chunk out of you wallet when shipping is based on weight.).

Hope this helps.

Steve K.

Thanks for your help guys. I think I'm just going to get the complete Micro-Mark casting set from their website. It's a little pricey for my taste but, oh well... Thanks again!

Hobby Lobby has it in both the model section as well as in the crafty section with the clay and stuff.

What do you plan on casting? If it is simple parts with little to no undercuts, then an RTV such as Alumilites Brand will work just fine, and is available at most Hobby Lobbys'. It is also a 1:1 mix RTV.
For More complex pieces with deep undercuts and such, an RTV that is soft and pliable is recommended.
I use Dow Corning brands for those. They are a little more pricey, and usually have to be mixed by weight, which requires a scale (I used a digital). I can usually eyeball this method as I 've done it for so long now.
De-airing the RTV is the only part I don't care for.