AHMAD_UCD

Hi gr5, Thank you for the response. I have to drill and tighten some screws at the bottom of the model for the experiment, and hence the thick bottom. I am not sure why it's 50mm/s and taking 2 days. The speed I set was 100mm/s and the rest of the settings remain the same. It takes about a day. Is the speed fine at 100mm/s or could that be the reason? please check the attached picture. I will keep the thickness of the bottom at 1.5 mm/s, pause, and glue an already printed block using the pause at layer plugin. Thank you for the useful tip, it would surely save time and also using an 0.8 mm nozzle would be better. Thank you I will update you with the latest results by turning off the "combing" and the "z-hop".

Hi, Thank you for the response. I put it at the center after assembling the feeder. I have tried it moving a few turns up but still it grinds, as mentioned in the initial post. Going through various posts I think the speed settings are too quick. Can you please check, I have attached the project file in the above post, or if you want any details, I shall gladly provide. once again, thank you for the prompt response.

Hi. Thank you for the prompt response. 1. Please find attached the photos. I had over 10 failed attempts so the pictures are from various attempts. With the latest settings, the bite marks/grinding are not very deep, however, the printing will stop every a few minutes. 2. I am using only one extruder, the one that comes with the Ultimaker 5s. The filament is PLA Tough White/black 2.85mm. 3. Thanks for clarifying about the retractions, I just read it in another post in the community and followed. 4. The front fan works fine. I've checked. I have included some pictures of failed attempts. The bottom one-to-a-few layers print fine sometimes, before it starts giving errors or messes up everything. Please find attached the recent project file too. I turned off the sensor to have a go, some of the lines are too thin, and some lines remained incomplete (marked light blue in the picture). The top and bottom are mostly fine. simple van basic all straight.3mf

Hello everyone, I'm facing some persistent issues with my 3D printer when attempting to print new car models that have curved surfaces. Initially, my prints with flat-bottomed models went smoothly. However, with these new curved designs, despite adding supports, the printer frequently fails, grinding the material. Here are the steps I've tried so far: Lowering the retraction speed to 35mm/s Cleaning the feeder and the wheel Cleaning the bowden tube Hot and cold pulls (core cleaning) Adjusting the tension on the spring screw by loosening it incrementally Experimenting with printing speeds of 90-100 m/s. Setting the core temperature to 215 degrees Celsius Adjusting Z-hop height to 2mm Despite these efforts, I continue to face under-extrusion problems followed by an error message that says something along the lines "problem with extruder one, check if the spool is empty." I'm using a new spool of tough white PLA filament, and my layer height is set at 0.4 mm and I am running the fan at 100% speed (default value). I would greatly appreciate any advice or suggestions on how to tackle this issue. Is there a specific technique for models with curved geometries, or could there be another factor I'm overlooking?

An old post, but still very helpful. Fixed my problem. thanks tinkergnome.