Neil I was most interested in your editors article on 3D printing of a model tyre using TPU, a flexible filament that gives very tough parts.

My question is does this material give a high friction rubber-like material comparable to a full-size tyre that is vulcanised rubber?

Godfrey Greeves

Hi Neil

Thanks for your info on 3D printing of TPU for rubber tyres.

Just what I wanted to know.

I want to convert my tracked tractor to four-wheel drive with rubber tyres.

These tyres need to be of rubber and have substantial rubber lugs.

The front wheel tyres need to be about 3.5 " diameter and the rear wheel tyres about 5.5" diameter.

So I think I will stick my original plan to make the tyres out of several pieces of rubber bonded with super glue.

After experiments I have found that my sliding mitre saw can give straight clean cuts of neoprene rubber sheet of 3 – 5 mm thick.

Godfrey