A good effort none the less. I think the only way to do this is to remove the soles from the shoes, and cast this part in rubber, creating a 2 part mold from silicone first.
I am in the process of building myself a Vacuum Chamber (am buying a pump and tank for my Vac Form anyway) so will be able to degas the CCCE I didn't have great luck with last time because I didn't have the tools. I also want to get a pressure pot so I have bubble free castings.
Thanks about the Heel Cup. Today's effort to make a negative plaster cast only sort or worked. The M and G of MAG worked well, but the A and most of the NIKE broke when I extracted the master.
I think the best way to do this is Vac Form over a buck (the way I made the Heel Cup in the first place), then glue the heat formed letters to it. For what the letters cost, I might as well just get the NIKE in white and the MAG is a teal or green or what ever colour they have that is close. The letters are laser cut from a PET plastic, but I also have acrylic ones and that stuff comes in many colours. The heat forming is easy (done with a hot glue gun over a plaster version of the buck. As for the gluing....I might use a different solvent next time that is less messy.
Even though this Heel Cup is slightly over sized, I was able to squeeze it down a bit and think that for a scratch build, this slight OS won't pose any problems. You have to pack the heel with EVA, so those with big feet will appreciate them anyway
