Sunday, July 09, 2006
Frame design update
This is what I'm currently working on slowly building. This is a minor revision based on something Adrian mentioned. Previously the whole X/Y head assembly moved up and down, but now the platform moves up and down instead and the X/Y assembly stays where it is. The advantage of this is that it prevents having a chain of 3 dimensions all dependent on a single stage. So it should be more stable and accurate. The disadvantage is that it can no longer produce parts bigger than itself, but that's not too important at this stage.

In addition to the little bearing bracket pictured in the previous posting, there are two new brackets for holding other bearings. These are just made by cutting and bending scraps of metal.

And also, for the Z axis bearings:

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