Yeah, I've been eyeing some MIC-6 from McMaster for a while. I guess it would be a good purchase if I ever wanted to add a heated bed as well. It's cheaper than CF, too.
Seems like you'd need a pretty nice probe to digitize the bed, but I'm sure people are doing it regularly in some industry. I have a 6 axis fabrication robot and we do something similar when milling irregular objects, though that is with a few less decimal points of precision.
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gr5 2,224
mic6 aluminum is... well... wonderful. It's very very flat. But make sure you always put kapton tape on it and then blue tape on top of that potentially. This is because you don't want to ever scratch it (aluminum is softer and easier to scratch than steel or glass).
If you get an aluminum plate do not get any other type of aluminum. Get mic6. Look it up on wikipedia.
However you might also have warping/bowing in the hardware that moves the head around!
An alternative would be to characterize your bed and adjust all the Z values depending on XY position. This would be a great plugin - it would add a Z coordinate to *every* move that has only X and Y. And adjust Z by up to .2 or .3mm depending on the XY location. Wouldn't that be amazing?
The plugin itself would be quite easy to write. The hard part would be characterizing your bed.
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