Dungeonhawk5 Posted January 24, 2006 Report Share Posted January 24, 2006 Good afternoon I have a fairly good lure idea im wanting to develop but am kind of at a standstill as far as how to make it... it can be a 1 piece mold and should work, but how do you go about building a prototype? wood? clay? etc? will silly putty stand the resin temps? Clay seems like it would crack on smaller detail things... im just unsure how to do it. please offer any suggestions you can. Thanks Ryan Quote Link to comment Share on other sites More sharing options...
nova Posted January 24, 2006 Report Share Posted January 24, 2006 The biggest problem with clay is that it shrinks. I have used wood and lead separately and together. Once you get a proto made then make the first master mold from silicone caulking (see tutorial). After you make a number of baits and you are happy with the product then make a master mold with resin. If you are happy with the resin master then you can take old rubber, melt it down; place the resin mold in a container that gives you at least an inch all the way around the mold. Then you pour the old rubber all over it making sure that there are no bubbles and ther is at least 1/2 inch of rubber over the resin mold. After it sets pull the rubber mold off the resin mold. Now you have a real master mold so you can pour another resin mold which will be the same as the first one. Be sure to check quality of each mold/bait at each step so that the end product looks as good as you can get it. Hope this helps. Quote Link to comment Share on other sites More sharing options...
Dungeonhawk5 Posted January 24, 2006 Author Report Share Posted January 24, 2006 I do understand that after the proto is made i need to cast it etc..Im comfortable doing all of that, its just making the original.. There is no bait i can model it from, its 100% new lol.. for this, wood would be hard as heck.. heck everything will be hard.. i guess ill try to figure something out Quote Link to comment Share on other sites More sharing options...
nova Posted January 25, 2006 Report Share Posted January 25, 2006 Draw it out on graph paper to size. Make sure you draw it from each angle. That way while you are making the proto you can refer to the drawings. Quote Link to comment Share on other sites More sharing options...
Dungeonhawk5 Posted January 25, 2006 Author Report Share Posted January 25, 2006 i just had a brainstorm and think i came up with a VERY good idea on how to do it... if it takes shape, it wont take that long.. im actually just using melted plastic with different things to make it... ill keep you posted, as if anyone cares lol Quote Link to comment Share on other sites More sharing options...
vishezfish Posted February 4, 2006 Report Share Posted February 4, 2006 You can sculpey clay... Don't know if it shrinks, ... I make my own baits out of it.... You can also bake it in the oven and it will get hard... So that might work when you use that silicone stuff... I usaully make it out of clay and make a plaster master maold... Then I pour junk plastic into the master mold (thats called casting)amd make as many master casts... Then I can make more molds off of that.. Hope I didn't confuse you!! Quote Link to comment Share on other sites More sharing options...
rookiepourer Posted February 4, 2006 Report Share Posted February 4, 2006 Sculpy clay should work. I have used it before to make some masters and using RVT silicone for the molds. After baking you can still work with it by shaving it down. If its got any appendages on it you can do those seperately and glue it after. Hope this helps. Quote Link to comment Share on other sites More sharing options...
jm Posted February 12, 2006 Report Share Posted February 12, 2006 Sculpy works good. I've made some neat prototypes out of casting wax. Candle wax is a poor second. Neat thing about wax is nothing sticks to it. If you want to make a plaster master mold, you can melt or chisel the wax model out of it. It easily pulls out of a silicone mold. Casting wax comes from the investment casting trade. Your class ring was first designed and made in wax, then cast in plaster, melted out, and the investment plaster mold filled with gold (or maybe pot metal). It comes in an amazing variety of characteristics, from dead soft to machinable. If I want to make a change on a flat belly lure that I can do on one lure, I make the change, then super glue it down to a flat surface with a coat of turtle wax on it and a form around it. Then I can pour a master mold out of either silicone rubber, or durhams plaster. I'm presently making a set of master mold boxes by surfacing plywood with polyester resin, with a gel coat top coat, sanded perfectly flat, and waxed to a mirror. When you make Polyester resin molds by casting over a plastisol negative made from another mold, you shrink about 2% in the plastisol, and 3% in the resin. Compensate for that in your master or live with it. I haven't had much luck making a mold out of silicone caulk. The commercial silicones cost about 30.00 a quart, but they are available in an amazing number of variants, and if you use one designed for mold making, it is a permanent mold and will outlast anything except aluminum. For transferring fine detail, including scale patterns it can't be beat. Hope it helps. jm Quote Link to comment Share on other sites More sharing options...
