Enhanced OctagonStar L300Mm Start Screw Printer: Upgraded Features for Unmatched Performance Review

This is a great improvement over my original Z screws. More durable with smooth up and down movement. I had to set the pitch per millimeter of lead screw to 400 compared to 1600 for my original Z screws in the Marlin firmware. The photos show the original Z-bolts while the other two show the bolt and nut.

This is NOT how they are shipped, luckily the nut wasn't on the stem. Which you might as well throw away by the way, loose fool, another nut I had here fitted the rod perfectly. I already have a couple of zero play Zyltech nuts so that's not a problem for me. The car won't be built in a few weeks so I'll find out how much they're bent, the table rotation is fine. On the printer they stagger in place. If I update my rating they are useless they should be bought from a better seller.

I bought this based on reviews and I regret it. First, the nut doesn't *slip* on the thread under its own weight, as another reviewer pointed out. Second, I can hand-spin this nut a lot and see the game. Worst of all it was sent in an envelope so it was probably affected by other packages at some point. For $10 I'm disappointed that I either have to buy a new bar or get an anti-backlash spring. I can post a video of the game if anyone wants.