Is my H2D punishing me?

Bambu Lab H2D
1

My setup : H2D , AMS 2 Pro on Left nozzle, AMS on Right nozzle.

Sliced a 4 colour print and with current spool locations I was given 29 hours, H2D said if I swapped 2 spools it will be 2 hours less.

I swapped the 2 spools and sliced and it said 30 hours , what ???
Annoyed I just put back my spools to original slots expecting the same 29 hours, it came back with 31 hours :roll_eyes:

Since there was no slicer software change, I am guessing something to do with AI ?

2

You do not need to slice it again to print, just swap the spools, hit PRINT and let your printer do the magic.

3

Thanks but I like the display to show correct spool position :slight_smile:
Also the extra 2 hours for exactly the same thing ?

4

Print it and see! For a print that long I’d personally not really care about an hour or two of a difference since it’s already going to take ages. Good luck!

5

I only encountered this issue once while using two AMS 2 Pros. The slicer displayed the correct filaments, but for some reason, the right AMS filament slot kept defaulting to a generic filament, and I wasn’t able to change it through the printer screen. I went ahead and clicked ‘Print’ just to see what would happen, and it started printing anyway… :roll_eyes:

After rebooting both the printer and Bambu Studio, everything started working properly.

I’m not sure if this happened to you too, but the generic version has a different max flow rate and this would change the print times.

I’m not sure whether it’s an AMS bug or just a one-time can-bus communication issue.

But I’m keeping my fingers crossed.

6

Thank you all for the insight and advice :slight_smile:

I did just encounter another small annoyance.
I used convenience mode for a 3 colour print, one on left, 2 on right. The H2D kept insisting one of the reels was on the other side(all was synced so it was wrong).
I manually moved the offending reel grouping on screen to the other side.

1 Like
7

If there were no slicer or setting changes, why would just swapping spool positions cause a different time estimate? Is the slicer re-optimizing toolpaths based on AMS slot order or nozzle assignment?

8

Nozzle assignment changes, so it factors in color changes

9

My guess… it was out of sync initially and calculated the best way to complete the print with old information, then when it was updated and re-sync’ed, it gave a new and fully updated assessment.