Please accept my appology for bringing yet another filament clip, but I wasn't able to find any clip without sharp edges. I primarily use clips for storing filaments in vacuum bags and various clips all caused little dents, increasing the chance to actually puncture the bag over time. 

These clips are by no means perfect but allow me safely use vacuum bags with most spools. If you have any tips or ideas, just let me know. 

Printing: 

• Use any material you're comfortable with. I'm using PETG but might try something else so the clip won't become looser over time.
• No brim neccessary. But the the bed area is small so please respect the experience with your printer. It's still manageable to brint on a bed slinger.
• 1.75mm filament hole has larger tolerance to accompany for different pringing/cooling speeds (altering the diameter).