routercnc_MK3

[EddyCurrent]

Eddy,
Thank you, I did look at that as well but it talked about PIC and Arduino and I didn't know what to make of it. But the diagram makes sense so thanks for posting that. I've decided to try out the BoB all direct and see what happens. If there is just one false e-stop I will add something like that - should be straight forward and there is plenty of space in the new control box I have planned out.

Yes, the link was just to show where I got the diagram from.

@Irving, I have a board like the one in the diagram, there is a moveable link so that VCC can be tied to Gnd or JD-vcc

[routercnc]

Few more bits for the upgrade parts.

Left = replaces some wooden parts which held the Z axis stepper motor, plus the Y axis ballscrew nut

Back right = Bracket which connects the new Z plate (20mm aluminium) to the Z ballnut

Front = Bracket which holds the bearing at the lower end of the Z ballscrew. Purpose designed compact unit to limit the amount of Z plate pocketing to retain Z plate stiffness. Machined the bearing pocket with a roughing cut, leaving 0.2mm dia undersize, then finished with full depth cut at final 20mm diameter. Really nice finish. Bearing arrived today (ID6xOD19xdepth6) and is a lovely gentle press fit into the bore. The end of the ballscrew will be turned down to leave a 6mm dia spigot.



As you can see I like to print out some basic drawings with a few key dimensions on as I find this helps overcheck the machining etc. I've also started sketching the outline of the part on the blank with a felt pen to see where it will cut, where to clamp, make sure the machining is occuring roughly where it should be etc. All for now.