Hello, Last week I built my second 3D printer which has two E3D V6 0.4mm hotends. I'm having a problem with the hotend, only proved with ABS. The filament is getting stuck on the nozzle continuously. I disassembled the hotend and found that the internal bevels between the nozzle and the heat break makes a small flange on the filament, I think this is causing the filament to stop the extrusion. I'll try to illustrate this on the following pictures: If the filament becomes cooler in this joint, and this is the main purpose of the heat break, the filament gets stuck in both directions. I wonder if a flat end on this design of hotend could improve the performance avoiding this issue. Any comments? Regards, JoaquĆn.
i have a similar problem. i belive it were the ptfe tubing meets the hotend inside the heatbreak. take a look at my post. iv given up now no answer for over a week on forums and via email.
Hi Enlightx! Thanks for your answer. I was watching your post and yes it's very similar to mine but my hotend is the 3mm direct version so it has no ptfe tubing... I also come from J-Head and moved to E3D to get higher temps, Unfortunately I'm not sure if this will work. I hope someone can help us because this way the hotend is useless.
The bevels are a bit of a red-herring, at that point the plastic is molten and the bottom of the heatbreak sits at near as dammit the temp of the block and nozzle. Everything at that point is a liquid and should be flowing. If you can let me know a bit more detail about your machine and setup by filling in the following form: https://docs.google.com/a/e3d-online.co ... =send_form I'd be in a much better position to help. 3mm and ABS in a v6 should be about as pain free as it gets and if you're experiencing problems I'm sure they can be easily resolved. If you post a few images of your setup that would probably be really helpful as well. Really nice images and impressions of the hotend/filament by the way! Enlightx, I offered to take back your parts for analysis and replace them in full to get to the bottom of your issue: viewtopic.php?f=13&t=236&p=1548#p1548 Hopefully we can get you sorted.