[K.J.Everest@blu]

Hi very 1st post so hope in right place.

I'm starting on the road to build a DIY CNC Machine. Have brought some rod and linear bearings for X and Z. X is a 1m wide and Z will be around 250-300mm. going to use M10 ? threaded rod for X,Y and M8 or M6 for Z. The Y axis will have to start with angle iron and bearings and gas pipe (will be 1.2m long will Hopfully change latter). Using 1.85 Nm (2.8 amps) Stepper motors and HobbyCNC board. max cutting size 6mm using kress 800 or 1050

1. Have seen some backlash ideas using delrin and springs does this work ok?
2. Have seen on some threads that the software can take some of this backlash out is this ture or not?
3. If this all works and hope it will, mainly will be wood but some light Aluminium work will be done what sort of tolerance on a 20 mm cut out +-1.0 mm ??? or better.
4. Last item should I use M12 on X,Y as over 1m in lenth, Stepper motors up to the task?.Any thoughts would help.

Thanks for reading.

Kevin