Posts made by Saltlife716

And yes all of my filament rolls are in individual 2 gallon ziplocs bags with the "keep dry" packs in them.

Ok I'll redo the PID test and save it then. But guys.. Listen to this. Trojan3D was on point with the hotend temp…

I ended up buying a brand new spool of Hatchbox filament, loaded it up, set temp to 200c. It worked PERFECTLY... Put in the old filament at 200c, then I got the same problem, brought the temp up to 220, and it started printing perfectly...

So my problem was, for some reason, this PLA (and other PLA of same brand) needed to be at 220c in order to print correctly..

@Trojan3D:

Hi Saltlife,
From what I can see, the temperature is one of the issues, so you should just raise up to 220 degrees minimum if not 230!
Your extruder is fine printing the skirt because S3D give usually less plastic during the process.
The temperatures reading change every time from a board to another, it doesn't mean that Duet is wrong, you should try to point an IR probe to the heater and see what is really going on near the nozzle.
Your extruder shouldn't skip steps as in the video, should grind the filament instead, so, I would raise the current to a decent amount and then step back until the motor is running fairly warm if you don't know the motor technical details.
The motor is not retracting, is just the effect of the stall, the filament act as a spring as your is a Bowden and the pressure is just doing that because the moment your motor stall, the rotor has no more torque and become loose.

My 2 cents
Regards

I will try raising the temp to 220 when I get home and see if that works. Thanks.

Extruding 10mm of filament at 5mm/sec, skips the entire time

I put my previous E3D v6 on the printer, and the same happens

@BDubs:

What happens when you jack the current up to like 1.2 or 1.4A ?

Going from 800 to 850 is like nothing…50mA is nothing to these motors.

When i bring it to 1.4A, it acts the same.

I have checked and calibrated extruder steps and current.
I swapped stepper drivers.
I changed stepper motor wiring.

About to put it my previous hotend and see if I get the same issue…

@Martin_S:

And how about the bowden path? If you feed it by hand, do you find any resistance?
I once had a filament that was just a bit thicker and it got stuck inside the bowden tube.

Nah no resistance when I push it through. The tube itself is maybe 2 weeks old.

So should I save the M303 results even thou it says something about 400c?

@dc42:

What do you think doesn't make sense? That message is produced when the firmware has calculated the heating parameters, which it can't do until it has measured the cooling rate. It's common to see that message ever since E3D introduced the silicone socks.

Oh, I didn't know. Just didn't know if I should save it since it was saying 440c.

You can see the temp, the graph, and the times. It just doesn't make sense.

Hmm.. I just ran it again and now all of a sudden it says

Warning: Heater 1 appears to be over-powered. If Left on at full power, it's temperature is predicted to reach 447C.
Auto tune heater 1 completed in 355 sec
Use M307 H1 to see the result, or M500 to save the result in config-override.g

I was staring at the temp for like 90% of the test, the highest it got was 248, and it didn't send that message until it said it was completed. Even then it was cooled down to around 140 when that message got sent.

I've used temps for this spool of PLA from 190 to 210 with the same results.

I have run a M303 H1 S240 twice, once before i hooked anything up to the hotend (just bought it a couple weeks ago), and once with filament through it, fan on, and sock on

When I tightened the tensioner more it got rid of the filament skipping, but then it started doing "the video" thing at about the same frequency as the skipping was.

The one thing that is making this weird, is that I just upgraded to a DuetWifi and I had none of these issues when I was on RUMBA. I meant that as another clue, not as a comparison.

1. Problem does occur if I extrude in free air using G1 E100 F240. Alot actually

The extruder drive is loosing it's grip on the filament, but I think that it's more of the extruder is trying to give it more filament than needed, or the hotend is having trouble pushing the filament out as needed.

The first layer and half of the second layer print perfectly, for it to do it randomly but never on the first layer. It just seems like if it was because it wasn't gripping right it would be doing it more often.

2. I did raise the current up to 1400mA and had the same results, so I brought it back down to 850mA.

3. Hotend isn't getting blocked, apart that it is brand new and I haven't really been able to print all that much, the fan is running 100% and the heatsink is cool to the touch.

So the same issue is happening when i just warm up the printer and extrude from web control. So i don't think it's an Simplify3D issue

@deckingman:

Check through the gcode file and see if you can spot any negative extruder moves that are not immediately followed by a positive extruder move. It looks like you are using 8mm retraction (which is a bit high) so you'll be looking for something like G1 E-8 followed by G1 E8.
HTH

I looked through the code and I do see the "G1 E-8.0000 F2500"
the "G1 E8.0000 F2500" is a couple lines down.

G1 E-8.0000 F2500
; layer 12, Z = 2.380
; inner perimeter
G1 X9.280 Y-9.280 F4800
G1 Z2.380 F1000
G1 E8.0000 F2500

1. All of the stepper wires have good connections.

2. These are the exact motors I have. https://www.aliexpress.com/item/New-Arrival-5PCS-Wantai-Nema17-Stepper-Motor-42BYGHW609P1-Single-Flat-4000g-cm-40mm-1-7A-4/2047689916.html

3. 850 was my current, but someone had suggested to bring it down a little bit to see if there was a difference (brought it to 800, no difference)

4. It is all 12v. I am planning to upgrade at some point in the near future. Just wanted to get all the kinks worked out first.

5. At 92 steps it pushes out the correct amount of filament every time.

UPDATES:
1. I decided to hook up the FSRs and give it one more try ( i couldn't get it working right so went back to springs) and somehow am getting a GREAT skirt and first layer, but that jerk is not happening anymore, but it's still skipping but in a different way now.

2. It's acting like the extruder is trying to give the hotend too much filament and it is forcing the filament to start popping out of the gear threads, which is taking pressure off of the filament and the filament stops coming out for those little periods then it catches back up and starts laying filament down again. It usually only stops for like 4-10 lines.

3. I turned retraction off. issue didn't change.

4. I brought the current back to 850. issue didn't change.

I appreciate you guys trying to help out. I'm at a concrete wall right now, and beginning to lose hope lol

I managed to get the print better, but the skipping that is happening is still ruining the prints. Any ideas?