Last we left our printer saga, everything was quite broken, and I was waiting on parts. The 625z bearings came in and I put the extruder motor back together. When I could easily turn it by hand, I knew my extruder problems were solved. Sure enough, I can extrude PETG at high speeds and no jams. The hot end was not to blame. I did develop a new problem though.
That is the status of my end stops. The printer thinks the inductive sensor is touching the bed even though it is nowhere close. I had an occasional issue with the inductive sensor reading poorly. That has become constant now, all my messing with the cables finished off my probe. I can’t start a print without that probe. I massaged the cable and found a spot that flipped the 1 to a 0. Time to troubleshoot.
Ok, so the cable is pretty well shot. I opened the jacket where the issues was, but couldn’t figure out the exact problem. They used very thin wire, it could be a break within the jacket. I just cut most of the cable and redid the wiring. That got me back up and running. I printed everything I needed for the upgrade plus spares in both PETG and PLA.
I double checked all the instructions to make sure I wasn’t missing anything and started with the tear down. On the plus side I am really good at disassembling the whole hot end/extruder! It looks so naked.
I only ran into one small snag. The part that holds the x-belt wasn’t accepting the belt on the right hand side. I printed 3 different versions, and they all had the same issue. I took that part off and worked around the groove with a hobby knife. It eventually relented and let the belt seat fully.
After that, the extruder assembly was pretty straight forward.
The bed assembly was a breeze. I like most of the changes they made to the cable management, and think this will be more robust. How the rats nest gets handled in the controller box could be a little better though. Maybe just a bigger box.
I went through the calibration wizard, did some nozzle height testing, then printed a smart looking benchy. Dimensionally it is great, but course settings mean it isn’t cosmetically the best.
I am thrilled to be over the failures, and proud of myself for solving all the issues. Given that is almost exactly the 1 year anniversary of getting this printer, I decided to share a few stats.
- 380 successful prints (more than a few failures, especially these last 2 weeks)
- 44.7 days spent printing (12% of its life)
- 6.3km of filament