Thread: plasma design 8' x 4'
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26-05-2010 #6
Hi Ads,
Great pics, thanks for sharing.
I have a couple of questions, I am genuinely interested. Having worked hard on getting rack and pinion / V bearings right, why did you decide to switch to Ballscrew / linear guide for the Z axis?
Also on the X carriage, the ratio of the distance between the wheels left/right to front/back is high. i.e. Its a wide, short carriage. In the past I have had problems with linear rails that stick when the ratio is too high, like the runners in a chest of drawers. Have you ever had anything like this? (probably not a problem because you drive from both sides)
Lastly, what kind of spring tension do you use on the rack? Ever seen it jump?
Best wishes
Dave
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