Oh Gods of the mesh, hear my prayers!
So first image is aftre a full home plus z-tilt. Run cold. After that, heated bed to 80º for 15 minutes. The result is the second image. The deviation seems consistent. The results, look like crap.
May the Gods of #fix-my-mesh bestow upon me their guiding light.
13 Replies
ok gotta' ask...about your assembly procedure. While bolting down your linear rail to your X gantry...did you snug down one end, one in the center, then the other end (standard rail to gantry alignment procedure) but what ORDER did you tighten down all the screws? You really do need to start at one end and tighten them all in line, down the line. Otherwise the odds are VERY high you WILL induce a bow in your x-gantry which exactly what this looks like
The printer was assembled for us.
I didn't assemble anything.
The most work I have done on this printer is change the probe and replace some parts on the print head / extruder as they broke or degraded over time.
For the frame, gnatry or anything else, I basically did nothing.
I did have to rethread the belts a couple of times and place them into the extruder carriage.
After @miklschmidt suggested it over on another post, I unscrewed the entire Z rail, and tightened it all up again using light pressure (tomorrow I will use a torque wrench to ensure only 2,5 Nm of torque). I started from as close to center as possible and then tightened one to the left, one to the right, back to the left, back to the right, leaving 2 empty holes between each screw. So basically, I tightened only 9 of the 24 screws in the order shown on the second line of that Excel screenshot. The result was about half a millimeter improvement (graph is of the bed after 15 minutes at 80º).
What's my next step?
Looks like it'll improve even further if you ran Z_TILT_ADJUST after those 15 minutes
You're already below the recommended flatness (0.1% of width or height)
I gather that is good?
more than enough to print on at least
Well, my first layer print test 100x100mm just finished and it seems to agree with you 🙂
Running the Z Tilt now.
Btw... I have these 2 profiles I believe in there:
Does this make any difference?
50x50 looking so smooth it is basically glass.
Nope, RatOS uses the "ratos" one. 0.145 is insane on a 500 mm
Good to know, but it still messed up my first layers. 😄