Well I learnt the lessons,weighed miniscule amounts of fibre,on scales designed for diamond merchants and then I did maths exercising part of my brain that had been resting for years,and I had fun.
Then I pondered flew home thought some more and tried it solo.
The science behind these is awesome !!!!
Also got my new genuine roller from Rod out in Finland and it is fantastic .
The results to test the theory.The new designs come next.