Those layer lines look like a perfect place for all sorts of shit to gather and stick to.

If one has sweaty hands - stay away from 3D-printed / soft plastic shell mice.

I've got to say "Ploopy" is one of the absolute worst names I've ever seen. Before I even saw the picture, I thought "I bet it looks like shit."

Super cool and I totally see the appeal, but at nearly 3x the price of my Logitech g502 for a 3d printed mouse with a technically inferior sensor, it's a big ask.

I bought a Ploopy Thumb a few years ago. I assembled it myself, and was pleasantly surprised at how easy it was (when actually following the instructions).

The small button on the right has broken twice, which wasn't a problem because I just downloaded the stl file and reprinted the button assembly.

I wanted horizontal scrolling, so I used QMK to make the trackball a scroll wheel when the right side button is pressed (that may explain the faster button wear). It was surprisingly easy, and there was even a comment in the source code pointing out which line I should modify for horizontal scrolling support. I guess they expected people to want this feature.

The price is high, but I don't expect to buy another mouse unless my needs change. The open source hardware and software is excellent, making repairability 10/10. The edges of the buttons are slightly rough, but I have the 3d printing files, so I get to choose what material it's made of and what post processing / smoothing is used. It hasn't bothered me enough to do anything about it.

While I can't recommend a trackball mouse to anyone, I can recommend Ploopy. It's one of the few products that I feel like I actually own.

Now do printers.

3D printed stuff looks so uncomfortable to hold.

Isn't there severe issues with micro plastics doing this? Serious question. I've just heard in general on 3d prints that they're more prone to shedding.

Is it comfortable in the hand? The surface looks super rough

I want an open source mouse with electromagnetic resistance wheel like one in Logitech MX Master 3S.

I've been using this mouse for almost a year now. No complaints.

This stuff is nice. Are there any plans for a vertical mouse for those of us with cranky old man wrists?

I'm waiting for my MX to die to get one! I really like the idea of open hardware and this looks like a good mouse.

This is pretty cool. I make and 3d print pieces for my G502 to make it fit better for my hand/nubs. This seems like it has a lot of potential to design something better for me. That price is steep though but being disabled that's nothing new to me.

I am also a big fan of the MX518 lineage mice, so I hope someone make a version that has that shape. When Logitech released an updated MX518 several years back I bought a couple of them, so I will be good for years hopefully.