M4 based larger bed holder

This mod was used for my custom magnetic bed using M4 bolts and larger springs. The springs are inset into the holder to allow for less play. My printer is using MGN15 Z rails, due to that these are taller than the stock BLV Cube bed holders, step file is included for your modding needs.

I used these springs - https://www.amazon.com/gp/product/B013G5I4US 8mm x 20mm

See BLV print settings for layout and infill.