I received my length of Peek - 1000 16mm today just need to develop a means of cutting it straight and drilling a central hole to tap without a lathe.Also figuring out how to start the die threading the brass rod correctly. This has encouraged me to only thread the part that will screw into the Peek.
I will be using the rrrf magnetic shaft encoder on one extuder and Looking at this locking-solarbotics-gm3-clutch as another little differential modification.
The other little problem on Bertha is to try to cut the noise it makes. to be continued