NeWcS Posted April 21, 2004 Report Share Posted April 21, 2004 Im starting to get into making my own plastics and want to first make my own mold. Is there a tut somewhere to make your own plaster mold? It doesnt have to me a 2-sided mold. The only one ive seen was on another site but that site is down. Thank you and great site!!! -Jay Quote Link to comment Share on other sites More sharing options...
nerdy Posted April 22, 2004 Report Share Posted April 22, 2004 its easy. buy some plaster and aluminum baking sheets. superglue the prototype to the baking sheet and pour the plaster over the lure. when dry, bend open the sheet and extract the mold, you might have to soften some of the edges. this part is optional... after the mold is completely dry, after a couple of days, seal the mold. i use modpodge and just brush it in. the sealant gives the baits a nice shiny look. Quote Link to comment Share on other sites More sharing options...
NeWcS Posted April 22, 2004 Author Report Share Posted April 22, 2004 Do i need to put anything on the bait before I pour the plaster over them so I can get them out of the plaster?. like vasoline? Thank you for the reply! -Jay Quote Link to comment Share on other sites More sharing options...
Big Splash Posted April 22, 2004 Report Share Posted April 22, 2004 No, you don't need a release agent, they will come out on thier own. You can use a variety of methods to make the mold. It is easy, and plaster is cheap. I use a bar top epoxy to seal the plaster surface. I also make original designs using plasticene and other items to make up masters. Quote Link to comment Share on other sites More sharing options...
Fish_N_Fool Posted April 22, 2004 Report Share Posted April 22, 2004 If you are using a soft plastic master they will come right out but if you are using a hard master you will need a release agent!!!!!!!!!!!!!! Quote Link to comment Share on other sites More sharing options...
Coley Posted April 22, 2004 Report Share Posted April 22, 2004 Here's one from Woodsac, I hope he doesn't mind me sharing with you. I have some of his craws, they are awesome. He uses fiberglass resin. Coley The fiberglass resin is a 2 part mix. Make sure that when you buy the resin it comes with the catalyst (hardner) or buy it seperate. Make sure you wash the baits that you are going to mold with warm soapy water and rinse thoroughly. Pat or let air dry until no moisture is left on the bait. If you are molding a clay or wooden prototype, spray with a release agent before pouring resin. A light coat of vaseline or some Pam cooking spray works good. If you are planning on making a prototype mold, I recommend trying this process on something that you can replace first. Inside of a small baking dish (glass or metal) glue baits to the bottom. I use superglue to make sure they don't move when I pour the resin. You can find these type of containers cheap at a dollar store or goodwill. When the glue is dry, use a measuring cup and add enough water to cover the baits with about 1/4" to 1/2" of excess over the baits. This is the amount (in ounces) of resin you will need. Empty the container, and again thoroughly dry it. When mixing the resin, the amount of catalyst you use depends on the room temperature. CAUTION!!! DO NOT MIX INSIDE THE HOUSE!! VERY STRONG FUMES! THE RESIN IS HEAT ACTIVATED AND MAY CAUSE DAMAGE TO PLASTIC CONTAINERS OR SURFACES!!! If the temp is below 70* I do not recommend mixing. Temp between 70* and 75* 10-12 drops per ounce of resin, 75*-80* 8-10 drops and above 80* 8 drops per ounce of resin. If you add too much catalyst, the resin will cure too quickly and cause stress cracks and breakage. Mix slowly!!!!!! The faster you mix, the more air bubbles it will create. I stir each mixture for approximately 1 1/2 to 2 minutes. Make sure if you are mixing more than 20 oz of resin at one time, the container is large enough to let it mix well. I mix my resin in plastic paint measuring cups. They are cheap and allow you enough time to mix before the resin begins to cure. SLOWLY pour the resin over your baits. VERY SLOWLY!!!! Let the mold sit undisturbed until it is cool to the touch. Turn the container over and tap out the mold. (This might take a few trys) Now just clean up the cavities if you have any excess plastic left over in them. Spray the mold with some type of release agent before you begin to pour. I use garlic Pam. It adds a touch of garlic scent and allows your baits to be easlily removed from the cavity. Now just pour your melted plastic and it should be ready to demold within 2 minutes (depending on the thickness of the cavity). If you would like, I can post a pic of some finished molds for you to see before you buy the materials. [/b] _________________ Hello, my name is Jake....and I'm a Bassoholic! Quote Link to comment Share on other sites More sharing options...
NeWcS Posted April 22, 2004 Author Report Share Posted April 22, 2004 WoW, Lots of good info here. Thanks to all Quote Link to comment Share on other sites More sharing options...
