Question about significance of height map.

A Former User

can you rotate the plate 90, ~~190~~ 180 or 270 degrees?

(or even clamp a piece of mirror to it, non reflective side up, if the sensor in use would trigger off it?)

fcwilt

Hi,

Well it turns out it was an issue with the left Y rail not being parallel to the right Y rail.

I had to way to compare them directly but I was able to mount a dial indicator measuring the height of the very end of the left rail relative to the top of the rear horizontal extrusion.

Adjusting the rail height was still trial and error (adjust, level, create height map, analyze, repeat) but at least I was able to adjust the rail in known amounts.

It turned out that a 0.001 inch adjustment made a significant difference.

The total adjustment I made is unknown because the idea of using the dial indicator came AFTER I had made the first adjustment where I tried to match the alignment of the tops of the left and right extrusions to the horizontal extrusion.

My bad.

In any case the "droop" in the left rear corner is gone. The bed is not perfect but the four corners are within 0.02 mm which is the best I have ever achieved.

And I am going to settle for that for fear of screwing something up by striving for "perfection".

Thanks to all for the help.

Frederick

Baenwort

@Phaedrux
Where did you order your plate from?

I've often considered getting a metal bed plate with magnets built in to replace.the glass.bed + buildtak magnet sticker for my 310mm circle plate but I haven't found anywhere willing to make it and certify flatness.

fcwilt

@Baenwort said in Question about significance of height map.:

@Phaedrux
Where did you order your plate from?

This is what I purchased:

https://www.midweststeelsupply.com/store/castaluminumplateatp5

Frederick

Phaedrux

@Baenwort said in Question about significance of height map.:

@Phaedrux
Where did you order your plate from?

In Canada from here: https://www.alustock.ca/MIC6-Aluminum-Cast-Plate

Baenwort

Thanks, I've emailed to see if they will do round and even better if they will drill recesses for high temp magnets to be JB Welded in.