I have a variable speed dremel and I am helping a friend with a diorama project. We would like to know if there is a particular bit or cutting wheel we should use to cut clear through foam core.
Honestly, cutting each one carefully with a razor knife is a real pain in the neck.
There is a hot wire cutting tool that works very well. It is built like a coping saw with a nichrome wire as a "blade" The wire is heated by electricity, and is plugged into the wall, so don’t use in any wet or damp areas.
The wire is just hot enough to melt the foam, so you get a clean cut. It should be available at a hobby shop that specializes in model making – especially trains. You can search (internet) for Micromark Tools, who are a US firm specializing in hobby tools and does mail order.
Don’t try to rig something yourself because if the wire is too hot and burns the foam, the chemicals produced may not be predictable and could be dangerous.
For the same reasons carefully follow the instructions for using the tool when you get it.
There is a hot wire cutting tool that works very well. It is built like a coping saw with a nichrome wire as a "blade" The wire is heated by electricity, and is plugged into the wall, so don’t use in any wet or damp areas.
The wire is just hot enough to melt the foam, so you get a clean cut. It should be available at a hobby shop that specializes in model making – especially trains. You can search (internet) for Micromark Tools, who are a US firm specializing in hobby tools and does mail order.
Don’t try to rig something yourself because if the wire is too hot and burns the foam, the chemicals produced may not be predictable and could be dangerous.
For the same reasons carefully follow the instructions for using the tool when you get it.
References :
retired math teacher and model maker