Re: [CAD_CAM_EDM_DRO] Many Thanks to the group & "Z axis counterweight"

Peter,
Can I have more info on your CNC upgrade?
Did you replace the Knee screw with a Ball screw & Ball nut?
If yes what size & where did you buy them?
Did you replace the bevel gear on the Knee, if yes with what (type, etc) &
where did you buy it?
Why did you place the Gas Springs where you did instead in back by the V's?
Thank you,
Al Alfano

> If you find the pulley/counterweight arrangement a problem once you
> start making chips, you should consider installing gas-lifts. I
> purchased two 175lb x 16" travel gas lifts from McMaster Carr for about
> $15 ea and fitted them on the sides of the knee, near the front. I have
> previously posted a pic (which is still there in photos - "NEMA 42 -
> Gas Springs") I've found that even with the motor turned off or even
> removed, the knee still stays in position. Nice & safe!
>
> Let me know if you need more info about how to install them. I'm sure
> you'll be focussing on driving your Z axis first. Are you driving the
> knee or the quill?
>
> Cheers, Peter