Weird ripple effect on otherwise flawless PETG-CF print
Hi guys, I seem to have some oddities with my CF PETG. There is a weird rippling effect at certain parts of the print I cant really pin down. Any suggestions onto what might cause it will be welcome!
Printer: upgraded AWD vcore3 400
Ratrig toolhead with custom setup for peopoly Lancer extruder and meltzone
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Ghosting after the seam
I'm getting some artifacts after the seam and only there so I'm pretty sure it's not the tension in the belts
Help with my stringing and layers
Hey guys I’m currently having issues with string useing petg I’m running a mechanically stock Neptune 3Pro running klipper and I use orca slicer filament I’m using is elegoo rapid PETG with .5 Nozzle @ 240c and bed temp at 85c I’ve looked at videos on YouTube about how to possibly fix it but when I adjust the values I don’t really see much of a change or I’m just not understanding how to fix this problem could anyone direct me to a good video to better break down the values that need to be chang...
External Perimeter Resonance Issues - stretching/scratching marks on outer shell
I'm trying to figure out my best quality & speed settings for external perimeters to make the outer shell of the print.
I've tuned extrusion, flow rate, temperature, cooling, etc. and am getting very good results as far as the tops and bottoms of things go, so now I'm onto Resonance, Pressure Advance, etc.
I'm following the https://www.klipper3d.org/Resonance_Compensation.html guide, so Input Shaper and PA are off.
Attached is my latest tuning tower, and a recent best surface finish print...
Fillament change
hello there i was wondering what i can do to reduce or fix this, print looks awesome but the speed changed here and you can see the fillament has an other kind of colour change from this speed
infill/ bottomsolid infill issue
Anyone have idea what would cause my bottom infill to be like this? Looking all overextruded or something.. but perimiters are ok.. Profile is basic from ratrig on prusaslicer, I just reduced the print speeds.. Speeds for this print in the picture..
Weird Artifacts
Hello,
I am having these weird artifacts and I can’t figure out what they are . I figured they were VFA’s, but I can’t rid of them. I’ve checked and am sure the belt is riding nice on the idlers. It’s pla. Any ideas??...
TPU fails every time on the same spot of the second part, with a twist.
Hi all. Consider the attached image. I am attempting to print 4 parts at a time, using TPU. I have dialed in my TPU setting and I can print any of these 4 parts (disabling the three others in Orca objects). All the parts, individually, print without issue. Even at high speeds.
The problem happens at the end of the first part / start of the second. The printer puts down the first layer without incident, yet without fail, jams up as soon as it starts the second layer. Keep in mind, I have tested all 4 positions and all 4 print without a hitch. However, if I print more than 1 part at one, no matter what order, the first part prints perfect, the second always puts down the first layer but jams and fails immediately as soon as it starts the second. All parts have exact same settings.
If I try to print the 4 all at once, (layer by layer instead of object by object), the first part's first layer goes down without an issue. Sometimes, it starts jamming as soon as it moves to the first layer of the second part, but most often it only jams on the second layer, always after the first part. Again, no matter the order....
Gaps on top layer with .6mm nozzle
Same filament, same nozzle size (.6mm), similar settings. Top is printed on Qidi printer, bottom on RatRig
I can't figure out why there are such gaps at top layer?
I went tho all the calibrations in OrcaSlicer, adjusted required values, but still have gaps like this. Printing quite slow, at 200mm/s and 2k accel
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Solution:
Ok, I reset to all generic settings for printer/filament, chose 0.25 Quality/Speed. The slice look about like yours with less walls and a brim. I made one change Quality -> Walls and surfaces -> Only one wall on top surfaces ☑️ .
With at least 4 top layers, that should give a smooth top.
I'm trusting that your flow/etc settings are at least close....
Underextrusion issue - Vcore 3.1
Lately I’ve not been able to get a clean print out of my ratrig, it is severely underextruding every couple layers.
Material is Bambulab matte blue PLA printed at 200 degrees with a Rapido 2 UHF at normal speed. I’ve taken apart the extruder, cleaned the gears, fitted a new nozzle, tried different temperatures, but the issue still prevails. Is the hotend thermistor defective?...
Overextrusion
Hi, I have a really weird issue that my brand new vc4 is overextruding like crazy, and i dont quite know why. The extruder is extruding the correct amount of material. I appreciate any Idea that could help!
inconsistent part dimensions
I have this part that I'm trying to print in Orca. The central shaft is supposed to fit bearings, but it's also supposed to be consistent radius from top to bottom, and it isn't. The layers that are on the same layer as other extrusions (lower portion) end up .2mm in diameter larger than the upper portion.
I can probably adjust for this in CAD, but it's a real pain that it's inconsistent in this way. Is there an alternative means for dealing with this problem? It was even worse when I had layer time targets set in orca, but even after removing that, it's still a problem.
Any tips appreciated....
External perimeter with no filament extruded after the seam and blobs everywhere
Hey, as the attached images show — There's something wrong happening on the external perimeter just after the seam. It's the first time I see such issue on any of my printers and I'm not sure what might cause it. The filament was a bit wet PETG, but I printed worse filaments before and it never resulted in such prints, so I don't think it caused it. I tried printing with my tuned filament profile and also with the RatRig-provided PunkFil PETG profile and the result is the same. The attached photos are with PunkFil PETG profile. Thanks for any tips.
Top and bottom layers seem to be absolutely fine.
Also attaching the GCode....
z axis skipping
Hello
I have atleast for me weird issue where i get step on my print and time to time it also goes back to normal. Any suggestions what can cause this?...
Solution:
@TheTik thanks for the reply. I started to think that if stepper is missing why would it ''reset''. Turned out that my hot end screws loosened causing the hot end to tilt when given small contact with the print. I have had lot of issues with hot end contacting print especially with small layer heights. So in this case the extruder tilted causing change on the zero point and when contacting again from other side it reseted the situation.
Color change Layer Adhesion
I have a V-core 4 500 and it works fine on single color prints. I just started to play with the Color Change feature in Prusaslicer and it seems everything I change out the filament (single extruder) and resume the print, the printer is extruding at a higher level than before the pause and I'm not getting good layer Adhesion. Any tips on how to fix this?
how do i make this baby print faster?
vcore 4...hybrid....48v...what needs to be done to amp this thing to the next level? I'm trying a little 100mm cubed pot planter and this thing is saying 5 hours to print...feel like i changed all the relevant settings.
I put this same print in my X1C slicer and it says 2 hours 20 minutes. So fast compared to my v4? What do i need to do to speed up my ratrig?...
PETG bridging issue
Hello,
I don't know in wich direction should I search for fixing my PETG bridging issu : the bridging fail each time à the start.
The bridge flow at the beginning of the travel is to low and don't adhere to the wall. then after few milimeter of travel the flow became "normal".
I have switch off pressure advanced, lower the speed and acceleration, change the temp, change arachnid wall vs standard wall, change inside wall first, change the flow, etc...
but non solution seams to work....
PETG ribbed wall
Having a weird issue with rib like artifacts showing up on the outer walls when printing with petg, I believe it is a slicer setting because I do not have the same issue with PLA
Solution:
@CrashTestCharlie / VC4 400h So my flow was dialed in already, the culprit seems to be somewhere in the retraction settings. I disabled retract on layer change and then helped quite a bit. Going to play around with retraction speed and deretraction speed
Regular surface distortion pattern towards end of larger first layers VC4
UPDATE 2024-10-15:
This post has become more like a working group channel, currently focussed on investigating gantry bowing induced by heat from the hotend and its fan.
A summary can be found here: https://discord.com/channels/582187371529764864/1293322335545196655/1295834761021100114...
