I am probably thinking rubbish 'cause I couldn't dream of scratching at your level but could you imprint the tread into a strip of Milliput or similar and then wrap it round the wheel. I imagine cutting tread onto a circle is very difficult. The tread pattern is a repeat so maybe it could be done rather like a tool can be used to imprint brickwork.
Anyway just a thought
I'm sure you will sort it.
Jim - I had already tried putting a roll of Duro around the edge and cutting in the pattern but it didn't end well. I suspect that trying to imprint it in to a flat version would be almost impossible to get the length correct. It would need to correspond exactly to the circumference at the point of mounting. Any variation in thickness of the putty caused by pulling it about ever so slightly would change the length and hence the resulting circumference once formed into a circle
Steve - just stick some cart wheels on it?? I do have a small Unimat metalline lathe (but no bench to mount it on) and could in theory turn a tyre shape in aluminium or brass but it isn't the round bit causing the problem, it's the thirty tread blocks spaced at 12deg apart
Ian - ta
Scottie - stupidity not tenacity
Pulled the crappy tread off the tyre that was in the previous post so now back to my plastic blank
I've previously made tyres in 35th and 15th but the increased size of those scales helped considerably
Cutting the small scale tread blocks consistently is the main problem so.......
....... I knocked up a tread block cutting jig for my next attempt
the square rod pushes through the guides into the recess on the left
knife blade then pushes into the slot as shown to make the cut
whether this will work remains to be seen - have to wait for the glue to dry
the idea is sound but the slight flexibility of plastic could easily result in uneven cuts
it would have been better made in metal with nice sliding guides and adjustable cutting angles etc but I do not have the materials or facilities for doing that
watch this space for the next exciting instalment.........