I can’t argue with your arithmetic. All I can say is my Ender 5 menu does say steps/mm.
In the end though, what really matters is that the Z axis moves the correct distance to print models properly. Here’s what I mean. When I 1st received my Ender 5 Pro on May 28, 2020, I was , of course, anxious to see it working. I mean, who isn’t? However, when I tried to print 1 of the pre-sliced models that came on the SD card, it came out squished. It was only half as tall as it should have been. I was puzzled. I tried another model & got the same results. WTH?? After much searching the interwebs for several hours I found the answer: some other people figured out that Creality had changed the Z lead screw to 1 that moves only half the distance per revolution compared to the 1 they originally employed. Unfortunately, they failed to update the firmware shipping with the Ender 5 printers. I changed the Z axis steps/mm setting from 400 to 800 & all models started printing at the correct height.
So, in the end, no matter what you call the setting, it needs to have a value that gives correct model height.
I agree with everything you said. I think there is obviously a difference in the firmware and the display options between our two machines. My calibration prints come out fine so whatever that 400 represents it must be OK.
I did order a coupler and when that doesn’t help I’ll install an ABL and be done with it.
I can already think of a couple of questions I have related to ABL install - what is best - keep this thread going or start a new one?
I am finding this combination works really well. I have tried a bunch of bed types. This has been the best, at least for PLA & PETG. There are several aspects of this combo I really like: [LIST=1]
the Magigoo releases the models easily after they cool down (and they cool quickly because the bed plate is metal)
I find the Magigoo helps stop warping or lifting of the model off the bed during printing, especially at the corners
it's really nice to use a bed that doesn't need clips to hold it down
the metal bed lifts off & on very easily
[/LIST] I am currently using a BL Touch but, if I had been using the metal bed before I got the BL Touch, I would have ordered an EZ-ABL. I may still do so.
I installed the coupler and it did not eliminate the thunk noise on initial z axis moves. I installed the BLTouch and new firmware, seems to be working fine so far.
I hope your BL Touch continues to work for you. But if experience and helping othrs with theirs is any indication then sadly that will not be the case. ?
However, when I tried to print 1 of the pre-sliced models that came on the SD card, it came out squished. It was only half as tall as it should have been. I was puzzled. I tried another model & got the same results. WTH?? After much searching the interwebs for several hours I found the answer: some other people figured out that Creality had changed the Z lead screw to 1 that moves only half the distance per revolution compared to the 1 they originally employed. Unfortunately, they failed to update the firmware shipping with the Ender 5 printers. I changed the Z axis steps/mm setting from 400 to 800 & all models started printing at the correct height.