Hello,
I am completely new to the world of 3D printing (I have had my Ender V3 KE for two weeks), so excuse me if I don’t use the right terms. I’m learning new things every day.
I first started with PLA, and the results were pretty clean. But now that I’m printing with PETG, I’m running into some issues. The print quality is generally good, but I’m getting small strings forming on the part, as well as some sticking to the nozzle.
These images illustrate the issue better:
https://media.discordapp.net/attachments/546385499917647883/1343535394960179211/dakcYWF.png?ex=67bda057&is=67bc4ed7&hm=97930bdd475dc5617f52d53918277833b22034591affac8b9520486c496c6542
https://media.discordapp.net/attachments/546385499917647883/1343535395329019924/rky5qyN.png?ex=67bda057&is=67bc4ed7&hm=a2f3303abd12b83c80b86cacc0fa1f830447faa6de578f4a21f7e29adb715942
I also had a small PETG blob sticking to the nozzle during the first layer, which would eventually fall onto the bed or the print during the process. I reduced this issue by increasing the first layer height to 0.24 instead of 0.2, but the stringing issue on the part, as seen in the images, still persists.
I used Orca’s calibration tools in this order, and the results:
- Temp tower - 235c
- Max flow rate - 19mm
- Flow rate (pass 1 & 2) - 1.05
- Pressure advance lines - 0.165s
- Retraction - 0.6 (I didn't change it because I didn't see any issue on the printed model)
(Based on the explanations here: https://github.com/SoftFever/OrcaSlicer/wiki/Calibration)
Of course, I did a bed leveling (6,6) and Z-offset (-2.805) adjustment beforehand. Here’s the result:
https://media.discordapp.net/attachments/546385499917647883/1343537347651702905/h0pUOH7.jpg?ex=67bda229&is=67bc50a9&hm=b0070603749233bc51061006be1b8b5137a6875085c02806a6a370e6d9a8d3ec
https://media.discordapp.net/attachments/546385499917647883/1343537348213735496/XbKyj9M.png?ex=67bda229&is=67bc50a9&hm=4976065de04e15eaf9b875dd9c2416dee413fc36839b6efcb8ad74752b1b8930
(For the Z-offset, the layer feels smooth to the touch. I’m not sure if I should lower it further, there’s a tiny gap between the lines, but you can’t see through it.)
Regarding the settings, I use Orca and have Fluidd installed on my printer. I’ve played around with speeds using ChatGPT and Reddit as guidance:
https://media.discordapp.net/attachments/546385499917647883/1343541837553733652/mr4FIdC.png?ex=67bda657&is=67bc54d7&hm=26e84cbe08d4e9a913fdd507b132645737c98c8a167671f24a7987b53780044d
https://media.discordapp.net/attachments/546385499917647883/1343541837813518367/FsVk1Lv.png?ex=67bda657&is=67bc54d7&hm=9472b0fb843d4ecef6507f20839140e32045a1f0f291eceb8b38336de3ae6c68
https://media.discordapp.net/attachments/546385499917647883/1343544640296452117/K8wxI8F.png?ex=67bda8f4&is=67bc5774&hm=732780fddcf3a1136e41f4622472f6770a65fb702eff880a8a9c6f48f2e0c1b6
https://media.discordapp.net/attachments/546385499917647883/1343544640787451995/Bop6kTi.png?ex=67bda8f4&is=67bc5774&hm=a0c196f49ba2a3400e7a3b745797793bd9390a3abde337eb1d7c7a060e6b9c7e
https://media.discordapp.net/attachments/546385499917647883/1343541838170165339/cXlInmJ.png?ex=67bda658&is=67bc54d8&hm=2fca2026e06a9f96685a875c778e2118ca5153f05bdbc5ce8f3d58d3e4ec785e
https://media.discordapp.net/attachments/546385499917647883/1343541838501642272/SssRNX1.png?ex=67bda658&is=67bc54d8&hm=b8420a27be302a5406735db199ec1501bf073a12c018a2fecf9c3ab3f9c7041e
https://media.discordapp.net/attachments/546385499917647883/1343541838862094428/QToLVvJ.png?ex=67bda658&is=67bc54d8&hm=4b8465f6cba0f7d29ab5faa83b3d32a4e22826c5b189dcd50007e3bd30ac347d
For the "Smooth time" setting, I’m not sure what it does, so I left it at default (0.04s).
As for the filament, I’m using Overture PETG (https://www.amazon.fr/dp/B0CQ1S5RS1), which I dried with a dehydrator after receiving it and store in a vacuum-sealed bag.
All prints are done at 0.2mm layer height—I want to perfect the 0.2mm profile before moving on to 0.12mm.
