I’ve bought the CNC4Newbie, very happy with the upgrade vs the investment needed. My complete review Z-Axis Upgrade from CNC4Newbie.com Initial Review Got over 500 hours on it now and no major problems. As for going heavier in design and upgrading other components of the slider I’m not sure you will ever see the benefit. I’ve found as I push my machine the weakness of the X & Y axis starts to come into play. Found this out after pushing the capability (speed, accelerations, etc) of the new slider component. So eventually dialed back my speeds & feeds. Overall faster/more accurate than the OEM z axis, but cant get all the capability due to basic designs of the X & Y carriages. Only regret with the CNC4Newbie was he is now in progress of upgrading them to the linear rail vs round rod style. If I had waited a couple more months would have that.
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