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So I started with the overhaul in earnest. After thoroughly lubing up the new rail, and getting it mounted, I attached the new CNC tap v2. The design is improved over v1, but the belts are as much of a pain to attach as before. The belt tensioner worked really well, even though the readout is confusing.

After getting the chamber done, I flipped the machine over to find the brackets for both the power supply and CPU had failed. Going to need a new set. I proceeded to transfer the connectors over to the new board, and reroute a lot of the new connections from the past couple years.

Held my breath, and flipped on the power. No smoke. printer powered up and I was able to connect in. No errors. From there I bumped all the steppers and found I had z3 flipped, so I just flipped the direction pin and then confirmed it was moving right. I then lifted the toolhead, and did an end stop check. The TAP probe seems to be working well. I held my breath and homed X, then Y, then Z. All went well, then I did a gantry level and that succeeded as well.

Testing the extruder went fine as well, so I decided to go ahead and attempts a test print. I was sure Z height was going to be off a tad, and I was right. One nice thing about TAP is the extruder has some “give” to it and will float a couple mm on the bed if you screw up. I ended up lifting Z quite I bit compared to the old sensor, but now appears to be giving perfect first layers.

Now that’s all settled, I tossed to ASA in the spool holder and printed up my new brackets for the MP8 and PSU. Printing came out well! Not too bad. Flipped the printer up and installed the new brackets and got everything secured.

The only issue I’m tracking for now is the filament buffer switch is not triggering. I don’t know if its programming or hardware, but I’ll need to track that down. For now the main extruder is working ok by itself. Over all a very successful maint.