Hi, I have had my SV06+ for about two years. I have recently started having problems with PLA filament delaminating when it prints a small-ish surface area. The Silk style of PLA is worse than the normal style, but they both have delamination problems. It seems to do fairly well if I’m printing something that has a large surface area on the layer and has sparse infill in the middle. But if the area of the layer is small, and it only prints perimeters and gapfill, the layers do not stick to each other very well.
Here are my settings:
Filament: Geeetech Silk PLA Filament 1.75mm
0.4mm hardened steel nozzle
Hot end temp: 205C
Bed temp: 60C
Number of Perimeters: 3
Internal Perimeter Width: 120%
External Perimeter Width: 105%
Default Speed: 50mm/s
Gapfill/Internal/External Perimeter Speed: 50%60%/50%
Extrusion Multiplier: 1.07
Default parts fan speed: 100%
I have printed small surface areas with this filament before, at higher speeds and lower Extrusion Multipliers, with no problems. I have tried tweaking the hot end temp up and down, the default speed up and down (I went as low as 15mm/s), the internal and external perimeter width up, I have recalibrated the Z-offset and the Bed Mesh, I have cleaned the nozzle and extruder, I have tried brass and nickel plated nozzles, I tried running the parts fan at a lower speed, and I have run the filament through my filament dryer three times. It has produced a single useable print, but when I ran the same file a second time within a 2 hr period, using the exact same filament, it was delaminated again. I have been beating my head against a wall for two months now. Does anyone have any suggestions?
Sorry! I should have made that clear. The delamination occurs between layers. I have not tried to move it to a corner. I will try that and see what happens!
I tried printing the part in all four corners of my print bed. The delamination seemed get better if I printed it in the front left corner. All of the others look like the attached photo. I printed a temp tower to figure out the best temperature to print this filament at and 205C was the best. Now, if the print does better in the front left corner of my print bed, I have two questions:
Why does that corner work when the rest of my print bed does not?
What do I need to do to so that I can use the entirety of my print bed instead of a single corner?
Well, I spoke too soon. That one corner produced one good print. All of the subsequent prints I tried were delaminated like the picture above.
Here is a pic of the temp tower that I printed a couple of months ago before this problem became so prominent. To me, the best print quality appears to be the 205C section. I have tried printing this part with temps between 195 and 220. They all produce the same delamination.
I was hoping it was printed recently, but that tower still shows problems.
The tower has some extrusion issues…so does the other pic you posted.
For now, lets forget about the corners…
How old is the nozzle..??
Have you had a clog lately..??
Have you checked the extruder for a broken tooth or loose gear..??
At the risk of speaking too soon, I think that I found the problem. I took the print head all the way apart to clean it. While it was apart, I discovered that the connector for the hot end thermocouple had an intermittent solder connection to the PCB. So, I re-soldered it, re-assembled the print head, and gave it a try. Presto! No more delamination!!
