I have cast resin into my 2nd set of shrinking molds and pulled some nice minis from them. I used Amazing Casting Resin and it worked well. There is no smell and you can demold in minutes.
The models shrunk a bit more but not as much as I would have liked. I put the minis together by cutting and adding joints. I tried to make them as dramatic as possible with the grasshopper robot Kickback being the most dramatic.
I used hands from Warhammer 40k Space Marines and other kit bashing parts to add details. I also had to make all the bot’s backs out of green stuff as I had originally cast them prone to make it easier to mold them the first time.
Moving on I made up some bases with crashed cars to show that the Insecticons are giant robots even though they are smaller than most other Transformers . I then painted them with a base coat of black. I just need to paint them now in their signature colours.