by codepunk » Mon Apr 15, 2013 2:10 pm
I have been waging a ongoing war with my qu-bd since I installed it. I have tried a whole bunch of things that did not work, and a couple that did.
1. MK7 minimum with stock drive gear, total bust
2. QU-BD block with set screw modified with metal slug, o rings for compression and set screw, a little better but not much
3. Modified the stock drive gear by running a demel cutting wheel between all the gear teeth, wow huge improvement with the modified qu-bd setup but still jams occasionally but I have pulled off 3 hr prints. Hard
to find a MK7 gear at the moment but running the dremel between the teeth made a huge difference in the grip.
Now I run across this thread and I am going to try two versions of this mod which I am betting will finally give me a rock solid trouble free extruder.
I ordered a new drive gear from trinity labs even though my dremel mod is pretty darn good, I also ordered the PTFE and in addition I ordered a chunk of PEEK rod. My plan is to try this mod of the stainless
barrel and also try replacing the stainless barrel with one made of threaded PEEK and the PTFE liner down the center. Modifying the stainless barrel I have little doubt will cure all of my issues but I cannot help
but to think making new barrel out of PEEK lined with PTFE would be the ultimate fix.