When I first started planning my modular track for micro RC cars I was going to affix terrain to each module directly so each module was set. I really wanted to have the terrain as modular but I hadn’t come up with a way of doing that other than wood dowels which I didn’t think was robust.
In presenting the first video of the completed modules on a forum one user had a suggestion…rare earth magnets. That was the inspiration I needed. I was concerned that rare earth magnets still wouldn’t quite work through the module’s plywood unless the were very strong and a few small test magnets proved that. My ‘Design For Six Sigma’ ideation kicked in and I Pughed in my brain (in joke for my work colleagues). Hybridising dowels and magnets was the way to go.
Here is a quick sketch of the intent of the system.
The base modules that are to carry terrain will be drilled with an array of holes while the terrain will have steel inserts. The rare earth magnets can then be used as repositionable dowels attached to the terrain pieces, whatever they may be.