12 Bay 3.5" HDD Cage

12 bay drive cage for 3.5" HDDS. Designed to fit into a CX4200a from Sliger designs, but will fit in any 4U 'a' chassis from Sliger Designs. Depending on Depth of Case, you may be able to fit more than one of these cages into a single chassis.

BOM:

• 8x M4-0.7 x 6 Screws
• 4x 118.7 x 19mm x 1.6mm Flat Bar stock (I used Aluminum)
• 1x of each of the 3D-Printed Parts
• 48x "Nas Shoulder Screws" from Sliger Designs (Used in their front-load Nas Cases) -- I had to email support to purchase these, they seem to be custom to Sliger.

Printing:

I printed all four sides in their installation orientation (On the skinny end with the curved bottom of the drive guides nearest the buildplate) with a brim and supports. The male sides can be printed without supports (A1 and B1). 

Assembly:

1. The two sides; A and B, slot together with a Dovetail joint. This joint is intentionally tight, and will likely need to have the male side sanded down to fit, especially the leading corners. I used a mallet to tap the male side (A1 and B1) into the female side (A2 and B2) while squeezing the female side where the leading edge is to prevent cracking.
    
2. After the two sides are secured together, screw the metal "stretchers" into the plastic with the M4 Screws. I slotted a drive into the end slots and one in the middle and held the metal against the cage plastic to get the length of the metal. 
    
3. Once the sides are screwed together, you're ready to fill the cage with drives!!