this rubber band gun works awsome and,
Prints on one plate and simple assembly :)
I prioritized quality and durability with this print so feel free to adopt the settings I used,
That being said this printed great.
All creddits to @SanfordPrime_562474 for this amazing model
https://www.printables.com/@SanfordPrime_562474
Stanford Prime also have a youtube channel,
with a video of tests and assembly: https://www.youtube.com/watch?v=kj-jqfyAKiA&t=654s
Standford prime used sandpaper and drill for the pinholes,
That being said, with the selected profile and my P1P I did not need to sand or finnish my parts in any way.
I Just took a rubber hammer, but would suggest to do some light sandpaper'ing on the pin holding spinning wheel, as that are the only moving part. (trigger moves of course but uses tension and don't spin around the pin holding it.
My method of using the hammer was a Jeremy Clarkson move born from a lack of patience :D
IMPORTANT:
there is a cutout hole in the top of the fireing pin (see picture),
Thats designed for you to Cut and put some filiment in it.
(I just used a knife to slim the ends of it)
As I am sure you would not want the gun to missfire in a high stakes rubber gunfight with your friends ;)
With the filiment as shown in the picture, you make sure the gun fire each and everytime without issues, so defenitly do that ! ;)
Also totally check Stanford Primes video out ! he shows the assebly in a really good way
Again thanks to him for this incredeble fun rubber band gun!