Print Bed Medium
3. Lower Bed Plate
7. Levelling Nut
9. Upper Bed Plate
11. Locking Nut
b) “Home” the machine, and adjust the Levelling Nut nearest the (0,0) corner to get the gap right at the “Home” point.
c) Move the X-axis to near its upper limit (about 170 mm in my case), and adjust the gap at that corner.
d) Move the Y-axis to its upper limit (again, about 170 mm in my case) and adjust the third Levelling Nut.
e) “Home” the X-Axis, and adjust the 4th Levelling Nut.
f) Tighten all 4 Locking Nuts
g) Cycle through the four adjustment locations again, to make sure all is well; adjust if necessary.
h) Move to somewhere near the middle of the print range - about (100,100) in my case - just to check the gap in the middle.
And the results:
I looked at a few options on Thingiverse http://www.thingiverse.com/ before deciding on this stand http://www.thingiverse.com/thing:8290 (which clips onto the top bars of a Prusa Mendel), together with this printable spool http://www.thingiverse.com/thing:9039 , both by a contributor who calls himself 4ndy. Undertaking a substantial bunch of print jobs like this is a good test of whether my machine is basically up to the task. I'm still printing all the bits, but so far, I'm pretty happy with quality and progress: