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08-04-2017 09:59 AM #11
Yes they are resin cast. There are a lot of different ways to cast. I use one piece open faced molds where ever possible. This is just a matter of using double sided tape to affix your part to a flat surface, put a mold box around it and pour your RTV over it. Twelve to sixteen hours later once the rubber sets you can remove the part. Then just mix 2 part resin mixed well into the mold and it hardens up in minutes and you have a part. Then you have 2 parts molds. In this case you do the same thing then flip it over once cured and pour the second side. With this one you can leave it like it is and just pour the resin in and press the two halves together. This is called a squish mold because it squishes the resin out. You can also cut a fill tube and a vent into a two part mold and pour the resin in that way. As you pour the resin in the air comes out the vent till the cavity is filled. Then you have 3 and 4 part molds. Those are very complex. Then you have slush casting and rotational casting. I'm doing a slush cast now of a 1/8th scale 33 ford 3 window coupe body. This is my first one. It is a lot of fun. The hardest part sometimes is planning the way to make the mold. You have to figure out how the resin is going to flow and where air may get trapped. It can be challenging at times. If you are on facebook look up my group RATRODZRUS SCALE MODEL CARS. there is a lot of info there. I go through things step by step.





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A belated Happy 78th Birthday Roger Spears
Belated Happy Birthday