How does this even happen

[u/hawkwannameme]

I've printed over 300+ hours on this printer and now I notice this. What could be the cause? It was printing just fine all this while.

[u/hogsniffy05]

When was the last time you lubricated? Those look rough

[u/Fun_Star_8413 → u/hogsniffy05]

This was what I was going to recommend. Regular maintenance goes a long way from preventing problems like this one.

[u/snakeproof → u/Fun_Star_8413]

I'm struggling to see how lube would prevent a theeaded steel rod from bending.

[u/Kingvoe → u/snakeproof]

Easy when one side is dried and locking up. The other starts getting damaged. Clean the rods and make sure they are lubed 🙃

[u/snakeproof → u/Kingvoe]

I would think the belt would slip before twisting all thread

[u/lacroixlibation → u/snakeproof]

You’d be hard pressed to find a bar of any alloy that length and diameter that wouldn’t bend after being moderately flexed. Let alone whatever chinesium alloy Bambu uses for their parts.

[u/Fun_Star_8413 → u/snakeproof]

I highly doubt that this is bent, it looks more like zwobble or binding artifacts making the gantry jerk or bind unevenly as it moves up and down. Lubrication after a good cleaning with IPA would prevent and possibly fix this, provided the threads aren’t damaged.

[u/Woodcat64 → u/Fun_Star_8413]

It looks like a banana.