My molds shrunk and I cast the models and the miniatures came out more than a head shorter than before. I knew the shrinkage would not be much so I was not disappointed as all my molds and casts came out well.
I cast up the three molds and used green stuff to fix up the casts minis. I had to mold the originals prone but for the second mold I cut up the 1st casts and placed all three in one mold box to shrink them a second time. I decided to also do Sound Wave’s tape robots as well becuse I would have enough silicone to make another shrink mold.
My mix was the same as before with 30% mineral spirits. All I need to do is wait seven days for the mineral spirits to evaporate then cast, model, paint and I will be done.
Cheers,Mike
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I demolded the Insecticons today and it went exceptionally well. It was the best demold I have done in a long time. Now I have to wait seven days for the mineral spirits to evaporate causing the molds to shrink. I might only get 15% shrinkage so I might have to do the process again. I am very impressed with how well this went.
Transformers so Im going to shirk down some 1980s Transformers decoy vending toys so they are in scale with the recast decoy Transformers that I have already made over the last school year.
I have been recasting these 80s rubber decoy figures and placing them in dynamic stances and customizing them with some kit bashing. I’m basically taking a one part rubber vending toy and turning it into a multiple part pro mini resin kit.
silicone shrink down as the mineral spirits evaporate. I have done lots of casting but I have not done this shrink technique before so this is new for me.
best way to cast them in a one part mold. I 
was told that doing this with a two part mold is difficult as the two parts may shrink at different rates and not match up for casting. I used 30% mineral spirits in my mix and filled up the three containers. Evidently the molds will take seven days to shrink. I will get back to you about the results then.
And one of the pair.
Thanks Mike.
I thought I would send in an update on my Acid Storm miniature. I have given him a green wash so I can see imperfections in the casting. I then filled major problems with milliput putty. I like to have some of the original problems show to look like blast damage. Im working on repositioning the left arm and I have replaced the hands with 40K Space Marine hands. Acid Storm is holding an acid grenade! Next, I will paint the real base color on. I will also make a crazy base for him and pro paint him soon.
The 25mm sized Transformers rubber decoy figuers originally came with the transformers toy figures in the 80’s. They are rubber and are decaying due to age. I’m recasting them for myself and adding hands and changing the poses and characters as in this case.
I will make him by recasting one of the 80’s miniature rubber transformers decoy figures. I think the one I’m using for the master copy is a Star Scream. I will cast the old figure repose it, add new hands and a new Acid Storm paint job as well as a cool acid damaged base. Included are 
photos of A.S. and a character named Sunstorm that I previously made using this method. 