Further Continuing Hirst Molds,
After several purchases, and emailed discussions with Bruce personally, You'll find he is EXTREMELY helpful. He even relayed us to a manufacturer to make our own molds! Now personally, IMO this is true customer service, as long as his generosity and camaraderie for the hobby is not abused. ie making copies of his molds...is just NOT COOL... but he has no issue with (if given credit) pieces and parts if for personal use.
We have utilized Smooth-on Mold MAx 14NV to make our own.
As seen below, we have made custom molds for specialty pieces, and combined some to do in mass. The one below is what we call a
Super40 (bruces is #40 standard blocks) Now it doesn't "duplicate BH mold#40"... his makes 1x3 and 3/4 blocks but only 5ea 1x1 and 10ea 1x2, Since we use ALOT of 1x1 and 1x2 blocks, ours makes over 100 in a single casting. Same amount of material just less casts equals less time...
Below the First Picture is one of my players using the "Super40" mold we created. The Second are 2 of BH Molds (top Lt Green/Blue) and 2 of ours( Walkway on top of walls in previous post DkBlue molds). The Third is the SmoothOn Product, The Last are several new molds out of the SmoothOn.
Below are several links to help provide info on this "3d" approach
https://www.smooth-on.com/
http://www.hirstarts.com/moldmake/moldmaking.html