The generic shelf wont be compatible with A1 mini, rest of the parts are easily printable on A1 mini.

WARNING: Hole spacing is slightly off (see drawing in photos), version1 print profile

UPDATE:

     Version 1 print profile – Custom dimensions – has shelf

     Version 2 print profile - Standard rack mount dimension w/ diagram (see profile) – no shelf

     corners, v1 and v2 are compatible with each other 
 

DIY Modular Server Rack – Homelab [WIP]

This design is custom; however, I've tried to make this as plug&play as possible with 10in rack mount designs. 

• 9.5mm square holes for mounting studs. Tested with other random M6 square mount (https://www.thingiverse.com/thing:3499085)
• 9.5 in spacing between center holes – shelf only
  • shelf dimensions dictate this, modify to liking
  • interior spacing of holes from front to back is 8in → fully build rack would have 9.5in spacing in front/back and 6.25in spacing on sides
• corner piece designed to have square mounting hole on 2 faces → provides 4 faces to rack for more modularity 
• studs/screws designed as M6, fit snuggly, do not over tighten screws (I've broken 1)
  • Tighten with flat head
  • 15mm screw, for room to add face plates
• Using 1/4in wooden dowels (48in dowel = ~$0.70)

Still a work in progress, happy to make adjustments, still testing fit with other 10in rack designs found.