I had grand plans for this post. I figured I’d say how excited I was to get the new DaYan Panshi DIY kit; that I put together a highly sped-up video of me assembling, lubing, tensioning, and stickering it; that it’s a very good cube but not necessarily better than a Zhanchi or Guhong v2; yadda yadda yadda. My posts are always so verbose; for once, I figured, this one could be video-driven.
Well, things didn’t quite work out as expected.
I did setup my video camera and assembled the Panshi as planned. And the resulting video is below. But instead of ending by showing H and F and U perm executions on a new cube, it ends with a 42mm Zhanchi sacrificed for its (now-ruined) core and a defunct Panshi with a broken core, four broken torpedoes, and one broken corner stem. All the result of a badly-made screw.
What happened? Well, when it came to testing the Panshi before tensioning and stickering, it felt like something was amiss. It had a bad clicking sound. Not the baseball-card-in-the-bicycle-wheel light ticking of a Guhong that I rather like. No, more like a grinding sound. Although the layers each moved quickly (much more so than expected), there also was something really “off” about them. After removing a couple pieces, I found the culprit: a broken torpedo. Weird, I thought. I’ve assembled probably 15 DIY Dayan cubes, and I’ve bought another 10 pre-assembled, and I’ve never had a torpedo break. The Panshi does have much smaller (and probably weaker) torpedoes than its older siblings, so I sort of shrugged it off, removed the remaining part of the torpedo stem, reassembled, and tested again. Oddly, the grinding continued.
After a bunch of assembly and reassembly, I finally realized that one of the screws had mis-threaded into the core, causing a layer to wobble badly and probably straining the torpedoes. You can see that around 4:44 in the video. Another problem I’ve never had when assembling a cube, but the Panshi does have a smaller core with longer screws. Sigh. Improvising I tried to repurpose the core from my 42mm stickerless Zhanchi after reading that the Panshi uses the same core. Only after I had rebuilt the Panshi around that core and started assembling, did I realize that the torpedo problem was not isolated. Four of them had actually broken. This far into it, I figured I’d press on and built it minus the broken torpedoes. But then, the coup de grâce: I realized that one of the corner stems had broken off at the tip. You can see that toward the end of the video (around 6:00). An hour and two cubes poorer, I figured I’d at least finish the video to have something to show for the effort.
The culprit? I’m pretty sure it’s this screw:
Even with macro photography, it’s hard to tell, but the tip of the screw is badly unfinished: (1) it has a rim of sharp flashing nearly as thick as the threads and (2) it has a sort of angled divot/dent on one side. Together, I think those flaws caused the mis-threading. Kind of frustrating that such a small QC issue could ruin the whole kit.
I’m ordering a new Panshi tonight. This one won’t be DIY.