Why is print time so much different from profile on makerworld?

Bambu Lab Software Bambu Studio
1

I downloaded a 3mf with a displayed print time of 3.6 hours. This profile was made specifically to print in PLA. So I used that profile. I changed my printer (side note: why does BS always change the printer when it loads a 3mf, even if you select your printer on makerworld?), hit “preview”, and the print time is around 7.5 hours. Why is that?

For some context, the printer that came up when I open the 3mf is P1S, and I use an X1C. But the print settings are all the same. So what’s going on that I’m missing?

2

Guessing that they were using edited settings and maybe when you switched you didn’t keep those?

3

The printer selected on Makerworld is only used when you print via Handy. MW modifies and slices the file to match your printer before sending the g-code direct to your printer.

If you download the 3mf and open it on your computer, you see the unmodified settings used by the project creator, including their printer choice.