Got everything printed off last week and put it together this weekend. Pretty easy build outside of one step that takes magical powers. Not sure how they expect anyone to accomplish the step which requires putting two tiny brass cups on the ends of a little spiked rod that pivots the arm. You in theory put them on without them falling off while you piece two other 3D printed parts together around it. No brass in mine and it still seems to move freely. My clumbsy hands dropped one on the carpet, never to be seen again. Still tried to put one side in but seems impossible for two human hands to me. Everything else was simple and it probably took me 3 hours total to piece together after the 3D printing.
I still need to do the calibration and dial it in, but that will come next weekend.
As far as the 3D printing goes, everything seemed to print well on my Prusa MK3s+ that I built last year. I used Prusament PETG in Ocean Blue and Gold. They recommend printing at .3mm layer height. I never normally print that big and just did .15mm layer height for everything. I also did not find that I needed to use a brim for everything like the recommend in the instruction. I'm not really sure how long it took for print time but I spread it out over about four days. I would guess around 15 hours of print time.
I'll report back next weekend after I calibrate it and add it into my living room system. It will just be going to a Denon AV receiver for now, however, I might have some more projects coming there soon
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