In reply to Lucaj:
Pretty much the same deal as what your suggesting, but im sure you can buy stuff called stelth paint.. 5.10 sell it and its basicaly recycled 5.10 shoes, that you can apply (not sure how) to your own shoes to repair wholes, or (like you want to do) customis them to your requirments...
Cheers
And in reply to the OP...
Just wondering.. how would you start, with a pair of trainers and then put the rubber on them.
Or maybe try to get some rubber like materail and mould and melt them into a shoe shape?
They way i would see it, is.
A. can you get the correct materails for cheep enough.
B. How many man hours would it take to produce it, even assuming your paid minimum wage per hour.
C. would the end results be better than somthing that (if in sale) you could probably pick up for about £40.
I think in all likly hood the answer is that it would cost more than a bog standard pair of rock slippers, and probably not be as good.
All that said, iv seen people customis gear to there benifit, why not do the same with a pair of rock slippers... except these would be fully custom build rock slippers
What about taking a worn out pair and working from there... you know combinding a couple of old pairs which you can pick up cheap (i suppose) and creat one good pair from those???