Ive been wondering on how to make a mold? Using a pre -existing ceramic wall ! Ive used a brand called Mold Builder,it brushes on ,with several coats! It turns into a rubber mold.Is there a another way of making a better mold???? And once mold is made what is the best material to use,plaster ,resin???Any help-ful hints well be Thankful !!!!!!!

Jeff, over the years I have experimented with different mold making materials. A lot of it depends on what you are wanting to cast and how complex it is in shape as to what material I would use. A lot of info on the different materials out there can be found here http://www.smoothon.com This should help you. "Q"

I used plastillin bordered with Lego pieces to make my mould.


Simply roll out your plastillin (not the self hardening stuff) , push your wanted patern in with whatever you want, delimit it with Lego pieces and pour your plaster or casting powder (it's harder then plaster).
I made the whole walls of my castle like this(look under my profil , the threads with "Clervaux" in the title)

Cheers
Claude

I use Alumalite RTV rubber for all my molds. It is an easy two-part mix that comes with premeasured cups to make it simple. It works well every time. It is relatively cheap as well. You can get it for about $30 for a 16 oz set at Hobby Lobby. The 16 oz will make aquite a few molds too, depending on their size.

Good luck.

Another option is RTV molds - two part mold making rubber material you can get on line from Micromark (there are other locations and brands)

Iwantto thank you for your reply and hint!!!! Ive got two more rubber mold going today tell the cold frnt hit !!!! But what do you use to poor in the mold plaster paris ? or resin ??? The product that you mentioned dose it set up pretty hard? Thanks for your reply and Time!!! Jeff

I also use Alumalite two-part resin. It is a 1:1 mix ratio and sets up hard in about 10 minutes. It works great as well. Also available at Hobby Lobby and other places.