Saturday, June 20, 2009
A-FURNACE PART 14
Worked on the stove complex today. I allowed the silicone mold of the top section to dry overnight. It is a one part mold and in hindsight I used way too much expensive RTV in making it. I could probably knock someone out with the finished chunk of rubber. The only problem was in removing the master from the mold the section that extended into the top making a recess for the stack broke off. At first I was a bit upset but after casting I realized that this might have been a weak spot prone to deform and possibly make it difficult to insert the stacks. I still used a recess but I just marked the center of the casting and drilled the hole on the drill press. The stacks are 5/8" Plastruct tubing. I also cut out the platform that runs between the tops out of .030. I will need to frame this with .060 square stock but for now I just placed it on top to check the alignment. This platform was cut from a single sheet of .030 styrene - its not hard if you just take your time to mark everything out and then score the lines using an Xacto and circle cutter.