Steve Huntley
Every object has three colors
a base color
a shadow
a highlight
Basics of rock casting and coloring
Suppliers of molds and foam cutting equipment
Bragdon Enterprises has the molds which Steve uses: Their web site does not have all their molds pictured, but you can see them all in the downloadable catalog - just follow their instructions.
Demandproducts makes the knife which Steve uses
Here are some other hot knives as well:
This looks similar to the Steve used, but Hot Wire Foam Factory styles can accept heavy duty wire for custom shape creation:
- Hot wire foam factory knife
- Hot wire foam factory knife kit with sled and heavy duty shapeable wires
Micro Mark has their own version of a knife and they have a video demo
Read the reviews about the knife from Harbor Freight
And this knife from Amazon which looks like something I saw at Maine Trains