Mag Tray for Small Metal Parts

I made this because i was tired of losing my small screws when taking apart my printer. It works great to keep them securely in one place. The bottom is thin enough to help magnetize it to the bed or other metal surfaces. Glue magnets in place.

Here is the link to the magnets i used. Their thicknesses are around 2.7mm-2.8mm. If you have a different thickness, scale accordingly.
https://www.amazon.com/dp/B07MV2MKD5?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_29&th=1