K8200 extruder improvement
by hellstef, published
Between filamentdrive and hotend the K8200 has a thermal insulation made of teflon. The filament is heated in a fairly large and undefined area depending on temperature and feeding speed. In addition, the volume of the hole in the teflon cylinder increases with pressure and with temperature. Both factors mean that in slic3r the retrack must be set to a few millimeters. Nevertheless flow of filament does not stop. It's not possible to produce multiple parts in one operation without blobs and threads. Replacing the filament is also a problem. Sometimes it works, sometime it sticks in the extruder so the extruder must be taken apart.
I shortened the original teflon cylinder and replaced it by an actively cooled aluminum heatsink. The area with the largest temperature gradient is now reduced to a few millimeters. The retrack can be reduced to 1 mm in slic3r to interrupt the flow of filament. Also replacement of filament is now easy to do by turning left the big gearwheel (while the extruder is still heated) until the filament can be pulled out by hand.
Liked ByView All
Give a Shout Out
K8200 extruder improvement by hellstef is licensed under the Creative Commons - Attribution - Share Alike license.
What does this mean?
- You must attribute (give credit) to the creator of this Thing.
- You must distribute Remixes under the same license as the original.
- Remixing or Changing this Thing is allowed.
- Commercial use is allowed.
Show Some Love
Say thanks by giving hellstef a tip and help them continue to share amazing Things with the Thingiverse community.Tip Designer
We're sure hellstef would love to see what you've printed. Please document your print and share a Make with the community.
To post a Make simply visit this Thing again and click I Made One to start uploading your photo. It’s even easier to post a Make via the Thingiverse Mobile app (available via Google Play and Apple App Store).