Summary

Should work OK with the cheapest needle file set you can find at Harbor Freight, AKA:

https://www.harborfreight.com/12-piece-needle-file-set-468.html

Or any file that is 3mm in diameter.

Word from the wise: Take a 7/64" drill bit and drill it out a little so itll fit easier, but still tight.
You could also use a 1/8" bit - SLOWLY - and use some super glue to keep your file inside the handle, but I like the 7/64" method better, personally.

Print vertically, flat part of handle on the print bed.

I used an Ender 3 Pro with a PEI coated magnetic spring steel bed and these turned out fantastic.

Print Settings

Printer Brand:

Creality

                                            Printer:                      
Ender 3 Pro

Rafts:

Doesn't Matter

                                            Supports:                      
No

Resolution:

0.2

                                            Infill:                      
15%

Filament:

Inland PLA+

                Black

Comment & Rating (13)

@user_1306907882

Thanks for the design, these print great but I have a couple small recommendations. I scaled to 115% and the harbor freight files went in with no drilling necessary but they were still pretty tight, a couple of them would slide with a lot of force so I’d think maybe 112-113% scale would be about perfect. I also changed the seam type to aligned, when set on random it gave the appearance that the print was stringy or had other issues, when aligned the handles came out very smoothly.

The designer has replied

@shrimpisbugss

Did you happen to try the original instructions? Curious how those turned out, because the intent is for the handles to never come off, which is why the tolerance is so tight. And, out of curiosity, did you use a Bambu printer, or some other?

(Edited)

@user_1306907882

Replying to @shrimpisbugss :

I did see the instructions but I was curious to see if I could get it to fit tightly without and post print modifications. I tried 100% and 110% and couldn’t quite get it to fit, 115% has been great on most, a couple have slipped around but a little bit of superglue has fixed that. I printed them on a P1S using the profile you have uploaded, just changing the scaling and seam type before printing.

@shrimpisbugss

Replying to @user_1306907882 :

Cool, thank you for explaining! Appreciate the feedback :)