cidgrad Posted October 14, 2008 Report Share Posted October 14, 2008 Ok spent about 2 hours looking through old posts and such and surfing... unfortunately the things that look like they might help are gone or bad links, etc. need to make cheap molds for prototyping an idea I have (see if it works before I pay for a good mold, plus need to get shapes right). Will be pouring lead - Ssrta like a spinnerbait head (wire going through the lead). No detail, just smooth sides is fine for now. I'm thinking it needs to be a two part mold since the wire would run down the middle of the lead. COuld this be done with bondo? I see bondo as an option, but nothing where I see "how" to make a mold out of it. Hoping someone can help out with my little project. Thanks! Quote Link to comment Share on other sites More sharing options...
zx202guy Posted October 14, 2008 Report Share Posted October 14, 2008 Bondo might work....if you have patience and dont mind a mess. I would suggest looking up Poly-Tek out of Pennsylvania. They make a silicone that can be used for inexpensive molds. more importantly, they have a tutorial about "how to make a 2 piece" mold. This process is basically the same regardless of the material used. Tin-sil 60-70 is actuall y the material of polytek's you would want to use. For 30 or 35 biucks you can have George at custom jigs and rigs in New york make a silicone mold for you Quote Link to comment Share on other sites More sharing options...
cidgrad Posted October 14, 2008 Author Report Share Posted October 14, 2008 I gave them a call and the guy, believe his name was Stan was very helpful. Talked me through making a two part mold, helped me figure out what to buy, and offered an intro price. Thanks for the information ZX! Quote Link to comment Share on other sites More sharing options...
gunnie3035 Posted October 15, 2008 Report Share Posted October 15, 2008 So which model of Polytek do you use for casting lead? Quote Link to comment Share on other sites More sharing options...
zx202guy Posted October 15, 2008 Report Share Posted October 15, 2008 TIn-Sil 60-70, I believe... Call them to confirm though. Quote Link to comment Share on other sites More sharing options...
cidgrad Posted October 15, 2008 Author Report Share Posted October 15, 2008 you got it.. just numbers backward. TinSil 70-60 is what they told me. Accepts low heat molten metal. (When I heard this... I thought 'There's such a thing as low heat molten metal?!?!?!) Quote Link to comment Share on other sites More sharing options...
dawgfish Posted October 17, 2008 Report Share Posted October 17, 2008 For a cheap mold try water putty. You can find it at Lowes. It is a powder and all you do is mix it with water. I have used this with a few of my spinnerbait molds and have poured dozens of them with no problems. You can make a two part mold easily. There was at one time a tutorial out there for doing this. If you can't find it let me know and I will try and find it in my archive of articles. Dawgfish Quote Link to comment Share on other sites More sharing options...
clamboni Posted October 18, 2008 Report Share Posted October 18, 2008 For a cheap mold try water putty. You can find it at Lowes. It is a powder and all you do is mix it with water. I have used this with a few of my spinnerbait molds and have poured dozens of them with no problems. You can make a two part mold easily. There was at one time a tutorial out there for doing this. If you can't find it let me know and I will try and find it in my archive of articles.Dawgfish The water putty tutorial was no different than any other two part mold tutorial, with the exception that it uses water putty instead of RTV or bondo or whatever else. It used a thin layer of vaseline to keep from sticking to the master. Quote Link to comment Share on other sites More sharing options...
Ogajiga Posted October 18, 2008 Report Share Posted October 18, 2008 "low heat molten metal" Low Melting Alloys Quote Link to comment Share on other sites More sharing options...
gunnie3035 Posted October 19, 2008 Report Share Posted October 19, 2008 do u seal the water putty with anything? Quote Link to comment Share on other sites More sharing options...
bassn1 Posted October 24, 2008 Report Share Posted October 24, 2008 Be careful when using water putty or plaster. if there is any moisture in it when you pour the lead, it will explode. Been there, done that and I'm lucky I didn't get burned. Quote Link to comment Share on other sites More sharing options...
dawgfish Posted October 24, 2008 Report Share Posted October 24, 2008 Yeah, I agree about the moisture. I recommend baking the water putty mold to "cure" it before you use it. Quote Link to comment Share on other sites More sharing options...
Munkin Posted October 25, 2008 Report Share Posted October 25, 2008 I gave them a call and the guy, believe his name was Stan was very helpful. Talked me through making a two part mold, helped me figure out what to buy, and offered an intro price.Thanks for the information ZX! Thanks for this info I just ordered some today! Allen Quote Link to comment Share on other sites More sharing options...
