This is a test model to find the best flowrate for ironing with a specific filament. Standard setting is set to 10% flow, and that's not enough for some filaments. Print my 3mf and change filament for the part and see directly on the part when its finished what flowrate is best.
Feel free to modify if you want.
It's just a quick and dirty way to check the best flow.
Remember that large prints may need more flow than this test print will tell you because of the small footprint.