XY Issues (w pics) Pre-Assembled MK3
This is an image of a skateboard wheel adapter from my new pre-assembled mk3 that I just received. I followed the First Steps, and Setup Before Printing steps per the manual.
All my prints are like this. The infill does not reach the outer perimeter in certain areas - very frustrating. Please help.
This is a print from my older i3MK2 - The print below is what I am trying toe achieve.
Thank You so much in advance. Love my Prusa Printers 😀
Re: XY Issues (w pics) Pre-Assembled MK3
Look at how huge the gaps are between the 1st layer extrusion lines, especially right side of image. That's probably Live-Z too high combined with not quite perfect bed mesh leveling.
The nozzle IS reaching the perimeter, but first layer isn't sticking well enough to keep the ends from ripping free of the plate when the nozzle moves away at end of the fill stroke.
Could also be the build plate not sticking.
I would clean build plate thoroughly, and most importantly, adjust live-Z lower
As far as bed mesh, getting that better will reduce the need Live-z difference between portions of the plate. I very much recommend going to the N7 bed mesh firmware and making the printer gather more accurate bed level mesh data.
Re: XY Issues (w pics) Pre-Assembled MK3
Thank You.
What do you mean by:
"N7 bed mesh firmware and making the printer gather more accurate bed level mesh data"
is that redoing the XYZ calibration? Or something else. I will look at my menu.
Thanks
Re: XY Issues (w pics) Pre-Assembled MK3
Sorry, I should have been more clear about the N7 mesh leveling. Some of us have been using a special version firmware that measures bed level on a 7 x 7 grid instead of 3 x 3.
https://github.com/prusa3d/Prusa-Firmware/issues/1239
The standard firmware only measures at 9 points and interpolates the heights in between. Warpage of your plate between the actually measured points can mean the distances differ significantly from the interpolated value. The alternative firmware measures a lot more points and thus better matches reality. That's a next step if simply lower Z doesn't bring your entire print surface into tolerable range.
N7 mesh leveling requires flashing alternative firmware and special startup G-coding like in https://shop.prusa3d.com/forum/general-discussion-announcements-and-releases-f61/no-more-gnats-startup-code--t26921.html
Another measure is to physically, adjust leveling your bed leveling to make the mesh near flat.
I think your build plate is areas of warpage because even on the MK2 print, the first layer extrusion spacing varies quite a bit from area to area.
Re: XY Issues (w pics) Pre-Assembled MK3
Ah, I See. Thanks. That is a little over my head. I will read the threads on this, and see if it sinks in. I understand that giving the system more points to calculate would make it more accurate.
Sooooo.... I will first try:
1: Lower the Z. See if I can get a consistent first layer where the seems meet, and the filament sticks.
2: If (1) does not work, I will redo the XYZ calibration. (I am guessing that is what I should do).?
3: If (1) & (2) do not work, I will attempt to research more on mesh bed leveling.
The only reason I did not buy the kit - Is so that I would not have to mess with this. lol... I have bought kits in the past, and squaring and leveling can be a huge pain. lol , hahaha.
Thanks so much. I will post the results soon.