Hello everyone, I made this test model to test the Z-axis of my Bambu Lab printer. The length of the original model is 240mm, which is almost close to the maximum travel range of the Z-axis. I have uploaded the print files suitable for the X series, P series, and A1 mini.

Please select consumables that can display layer lines, and do not use those with a matte finish or special blends.

Use instructions:

So you need to observe from the front to see if there are any obvious uneven layer lines: mine looks pretty good.

Then, observe it at a 45-degree angle:

Mine looks pretty good too.

If yours looks like this: that's not good.

However, the following picture might be due to uneven extrusion or Z-axis instability, or both:

If your Z-axis wobble looks like this: your model is moving due to vibration. Add more base plates.

I'm slicing the A1 mini: it's located at 170mm, and we'll test both the Z-axis wobble and the Y-axis consistency during high-speed movement, which is used for printing large objects.

My A1 mini has some issues on the Y-axis: