OK so I've been going crazy trying to figure out what the heck is going on with my printer lately, Its just flat out refusing to print. I've tried everything I could find online about it, and contacted the vendor I purchased the glass bed from to see about a replacement since when it does print its not sticking well (this should be in the mail soon I think)
But while I was doing another print, and I FINALLY got it to print a skirt and a first layer or two, it all of a sudden started under-extruding again on the third 0.12 layer! This whole time I was thinking that it was probably an issue with my material, or an issue with my bed, or an issue with my leveling. (admittedly there was issues with leveling, but thats beside the point).
I was just carefully watching my extruder motor, and it wasnt turning while X and Y were doing the print! I was flabbergasted.
- Thinking it mightve been a clogged nozzle, I pressed onto the feed-clip and grabbed the filament and forced some through. it extruded without issue. So its not a clogged nozzle.
- Continuing to watch it, it was doing retractions just fine! It also did the 'recovery' movement after the retraction. (so 2.5mm negative then 2.5mm positive).
- Once the 'recovery' was complete, it stopped moving completely until a layer change occurred, then did another retract. Rinse and repeat.
- So we know its able to move forward and reverse at this point. I also know that it moves just fine when I send it commands in manual via octoprint and also using the marlin menu.
- I watched it carefully, and its not just the cog that isn't moving, the motor shaft isn't moving either. (I was watching the flat machined section)
- I have added and removed tension from the tension spring - no difference.
- I was using a piece of scrap plastic for the test print, so I just pulled it out and set it aside. The motor still doesn't move during XY printing.
- Verified the GCODE file has extruder movements throughout it.
Printer Details:
- Ender 3
- SKR 1.3 w/ 4x TMC2208
- Octoprint
- Cura Slicer - 0.12mm Layer Height (But the problem also occurred at 0.2mm height)
- 0.4mm Nozzle
Here is a bit from octoprint's terminal of the commands its sending:
Send: N74979 G1 X126.801 Y59.174 E418.23773*91
Recv: ok N74979 P0 B63
Send: N74980 G1 X126.896 Y59.282 E418.24156*95
Recv: ok N74980 P0 B63
Send: N74981 G1 X126.993 Y59.382 E418.24527*89
Recv: ok N74981 P0 B63
Send: N74982 G1 X127.095 Y59.479 E
I only print in 1.75mm PLA mostly. I got this stainless steel 0.4 nozzle and it seem to screw up the feeder motor is skipping but of I put my brass 0.4 nozzel on it seem to work fine no skipping.
I have cleaned the hotend and it's not clogged, the PTFE tube is all the way down.
Can you guys help a guy out Thanks. 😊
I am trying to access the technique videos on the site. I had attended a conference this year where I got the password for The Nozzle Forward class but have since forgotten it. Can anyone help?
To any firemen who want a serious challenge, and want to be a steward to the craft, I highly recommend attending a nozzle forward training session, no matter what the cost. It is fundamentally a change to nozzle advancement and hose management that needs to become common practice. I learned more in this course than I did in the academy, CE classes, or senior firemen imparting knowledge. Their techniques are scalable to any department, and work with any nozzle your department uses.
The greatest part of the class, however, was the lecture. The leader of the group imparted knowledge based on sound science, not here-say or opinion. He made fire science, how we learn it, as a mediocrity. He taught with competence through confidence and truth.
If you’re hitting a plateau in your fire career, and feel like you aren’t hitting the potential you thought you had, this class will make you question everything you thought you knew about fighting fire.
Hey guys I just noticed that my bed's range of travel seems to be going too far forward on the Y-axis. This is causing a small notch to melt into the clip at the back of the bed. It doesn't seem to be causing any trouble SO far.. but I've only been using this for about 5 days. This direction of travel seems to not have a limiter switch..
As the title says, got a new gun, wasn't feeding, opened to check out, and the air nozzle is stuck in the forward position. Shooting does not move it at all. Pressing it back just makes it pop back out.
So, what's the deal here? What causes it?
