P1P build bed comes down half way

Bambu Lab P1 Series Troubleshooting
1

I have 2x P1Ps the first I purchased 3+ months ago and when the print is done the print bed descends all the way to the bottom. The new P1P I just purchased when the print is done it descends to about half way to the bottom. Both printers have the latest firmware. This is puzzling to me.
I was thinking that maybe this option is ticked in the menu somewhere but I have not been able to identify that option or is there something wrong with my new printer?
I can bring the bed all the way down by pressing the Z arrows on the menu of the printer.
Any ideas?
Thanks!

2

I’ve got 5 P1S’s and they all go down a little more than halfway when done. Never had one go to the bottom.

3

This is very strange, my only concern is to be able to return or exchange the printer if something is wrong within the 2 weeks allowed.

4

It depends on the height of the printed object.
Here is the corresponding gcode from the ‘Machine end G-code’:

{if (max_layer_z + 100.0) < 250}
    G1 Z{max_layer_z + 10.0} F600
    G1 Z{max_layer_z +8.0}
{else}
    G1 Z250 F600
    G1 Z248
{endif}
5

Soon after I upgraded to the latest firmware it descended to the bottom (:“what’s it doing now”!) but thankfully since then it’s behaved as normal.

6

The machine is printing fine. I have not yet printed an item that uses the full Z height maybe I should do that to verify the printing bed descends to the max Z properly.

7

you might have the plate the wrong way in. Then the buildplate only goes half way down.