My Ender 3 Pro is suffering from progressively worsening under-extrusion. Prints start reasonably well but become increasingly patchy, sometimes stopping extrusion completely after around 30 minutes.
So far I’ve cleaned the hotend, replaced the nozzle, confirmed the Bowden tube seats against the nozzle, checked both fans, and tried different PLA filament. I’ve also experimented with disabling retraction, but the problem persists.
Using Cura with fairly standard PLA settings (210°C nozzle, 60°C bed, 50 mm/s print speed, 5 mm retraction).
I’m wondering whether this is heat creep, an extruder feed issue, or something else. Any suggestions on what to check next?

Please debug my problem I am using ASA from num makers and I am using 260c for nozzle and 105c for bed

When I print the area marked by the yellow arrow comes out rough, as if it doesn't have a top layer. But the slicer has the default top shells set to 5 (at least default for my current print settings). This is part of a helmet, so the shape is roughly the bottom of a bowl. I've tried increasing the number of top shells and using adaptive layer height (thinking it would smooth out the steps) but nothing changes the look in the slicer or the print. Any help would be appreciated.

I am printing on an A1 with Pure PLA, .2mm Standard with tree supports.

I'm having a multicolour first-layer problem on my Qidi Q2 with Qidi Box. The first colour prints well. Every colour printed after it has visible gaps between the lines on the first layer. No matter which colour I start with, the first always prints well, the others develop more and more gaps after the colour swaps.

The filaments im using are a mix of different PLAs (Basic, PLA+ and Silk) on a Qidi Cold Plate.

Plate is washed with dawn soap and warm water between each print.

All filament flow ratios, initial layer flow ratios, pressure advance and temperatures were calibrated for all four filaments.

Bed levelling is checked through Kamp before the print starts and Z-Offset is checked at the beginning of the print.

Initial layer print speed tested: 50mm/s, 75mm/s and the default 105mm/s.

The image attached is an example of what I’m getting. Black was printed first, then red, then green.

WHAT I'VE TRIED / FOUND
• Cleaned the extruder gear.
• Changed the nozzle to a new one.
• Reviewed the project settings and the sliced G-code: the slicer sends the same extrusion amount per mm for every colour, so it isn't under-extruding by design.
• Raised the first-layer nozzle temperature by at least 5 °C on the later colours: no change.
• Many test prints with coloured strips playing with settings and nothing would improve.
• Measured first-layer thickness of a failed test print by print order (target 0.20 mm layer thickness): black (1st) 0.22 mm, red (2nd) 0.25 mm, green (3rd) 0.28 mm. The nozzle appeared to sit higher with each colour change.
• Printed 7 same-colour strips over 50 minutes with no colour changes: all 0.22-0.23 mm, so there is no thermal drift over time.
• This is leading me to believe there might be a Z height drift every time the bed is repositioned after the colour swap.
• Tried test strips modifying the initial flow rate for each colour and that had no effect on quality for the 2nd, 3rd and 4th colour.

Anyone seen this before? Any solutions to suggest?
What could be causing these gaps?
Is there a way to check if the Z-axis height isn’t what it’s supposed to be after a colour change?

Thanks in advance

Hi everyone, im have a problem with stringing and failure bridges on my ender 5 plus . I printed temperature test from 250 to 220 which you can see on the photos .

My ender 5 plus configuration:

Hotend: stock heat sink , Bi metal heartbreak , brass heater block and a new nozzle also Capricorn blue tube.

Board: skr 1.4 turbo (with G34 support).

What i have already done:

Dride PETG filament for 6 hours

Calibrate E-steps

Tried to calibrate retracts( from 2 to 6mm) best result 2.2 but it still have strings.

Change nozzle

Slicer : orca

Printing settings:

Printing speed: 60mm/s

Travel speed: 150mm/c

Accelerations :1000mm/s²

Bed temp: 70C

Fan: 40%

Retract : 2.2mm

Any advice what i should checked or adjust would be greatly appreciated

hey y'all!!

Been printing off these little card borders, printed two sets successfully at 0.08 layer height, then unloaded filament and reloaded it. Afterwards, prints have come out completely cooked. It's dry, I seriously doubt travel speed, any ideas?? I have never seen anything like this before. The left most one was printed before the right.

Cheers!

Bambu X1

Testing with ASB

This is the best result I've got from these supports. All sides are good except the support side. I'd appreciate any pointers!

I am getting an alert that the nozzle control is abnormal but I'm not sure how to fix this, this is what the alert looks like and what behind the nozzle looks like. It doesn't seem to be damaged but I could be wrong! Thank you for any advice!

Printed this model and have these weird bumps towards the back of the blade. Printed on my mostly stock Ender 3 V2 and the orientation is how it was printed in the first picture. Model link is this: https://makerworld.com/en/models/2576196-bonesaw#profileId-2840812

Edit: Slicer: CURA Filament : Creality PLA Print speed: 50 mm/s Bed temperature: 50 C Nozzle temperature: 200 C

Hi everyone,

I recently bought an ELEGOO CC2 and I started designing and printing some Halloween decorations. I designed some thin decoration (1,2 mm thick) with multicolour, but when I Printed them I noticed some black spots and looking at the slicer (I am using Elegoo slicer) , between the first and the last layer it creates some strange square black square at the contours. There are some setting I can toggle to eliminate it or change the colour?

I've cleaned the bed, dried the filament, lubricated and greased the machine, done flow rate calibration, flow dynamics calibration, bed leveling, XY belt tensioning, and ran the Bambu Lab calibration. (Unedited Bambu Studio profile "0.30mm Standard @ BBL H2C 0.6 nozzle")

Printer: Bambu Lab H2C
Slicer: Bambu Studio
Material: Bambu Lab PLA Basic

Temperatures: 220/55

Print Speeds: Initial layer: 50 mm/s, Initial layer infill: 105 mm/s, Outer wall: 200 mm/s, Inner wall: 300 mm/s, Small perimeters: 50%, Sparse infill: 350 mm/s, Internal solid infill: 250 mm/s, Vertical shell speed: 80%, Top surface: 200 mm/s, Bridge: 30 mm/s, Gap infill: 50 mm/s, Support: 150 mm/s, Support interface: 80 mm/s, Travel: 1000 mm/s.

Acceleration: Normal printing 8000 mm/s², Travel: 10000 mm/s², Initial layer travel: 6000 mm/s², Initial layer: 500 mm/s², Outer wall: 5000 mm/s², Inner wall: 0 mm/s², Top surface: 2000 mm/s², Sparse infill: 100%.

Overhang speed: 10: 0 mm/s, 25%: 50 mm/s, 50%: 30 mm/s, 75%: 10 mm/s, 100%: 10 mm/s.

Retraction Settings: Length: .4mm, Z Hop Type: Spiral, Wipe While Retracting: Enabled, Wipe Distance: 1mm.

I get these weird artifacts that looks like some sort of extrusion issues. Could it be that i have tuned pressure advance incorrectly?

Printer: Voron 2 + DragonBurner (Orbiter 2.5 + Bambu X1 Hotend)
Slicer OrcaSlicer 2.4.2
Meterial: Sunlu ASA
Temperatures: 270/100
Speed: 160 mm/s
Retraction: 0.8 mm

I'm working on some arcade controllers. This is my first time using Choc V1 keyboard microswitches.

I downloaded a Choc v1 button from makerworld and duplicated the other guy's measurements for the part that sticks into the microswitch.

When I print his button... it works. When I print my button with the same dimensions, it does not work.

What am I doing wrong here because it's making me crazy!!

• Printer Model - Bambu P1s
• Slicer used (e.g. Cura, Prusa, etc.) - Bambu Studio
• Filament material and brand - Aliexpress PETG
• Nozzle and bed temperature - Nozzle - 255c / Bed - 75C
• Print Speed - 50 and then 105mm/s
• Retraction set - ?