Note: This is not my design, it is a modification to Niche Zero custom flow control discs for slower bean flow by Benno1337 on printables.

I added text to each disc to make it more clear what disc is currently in use.

The numbers define [width(mm),length(mm)] of the opening in the disc. Larger opening means faster flow.

The following information is directly taken from benno1337s prinatbles site:

"Here are the results, in terms of time taken to grind 15g of beans:

• [Stock Niche disc]: 15 seconds
• [10,10]: 26 seconds
• [10,9]: 43 seconds
• [9,10]: 50 seconds
• [9.9]: 2 min 20 seconds"

For more information, please visit the original printables profile.