4' x 4' x 8" Router Build

[JonnyFive]

I think I've remebered how I got confused with the 2:1 gearing, think I read somewhere about using 2020 ballscrews and then gearing them for lower RPM. 2010 seems to be the norm for a 4' machine so will go with that.

I've made a bit more progress on the design......

I have removed the gear reductions, now the x & y axes are geared 1:1 with 20T pulleys and the z is direct drive. I am still working with the 4Nm Nema 23s on all axes.

I have also tidied up the end stops and proximity sensors.

The x & y cable chains now have inner dims of 25 x 57mm (I couldn't find 25 x 58mm).

Think I'm nearly there with the mechanical design, soon be time to concentrate on the electronics - not looking forward to that one!