A modular frame solution designed around the standard 1U rack dimensions for use in 10" racks.

The idea for the Infiniframe started as a project to enclose my Ender 3, but quickly morphed into a modular system that can be used for any type of frame you require.

The main dimensions are all based off of the dimensions for a standard server rack, so each "Ext-" part is exactly 1U, or 44.5mm, high. I've also designed a couple of different configurations for the Ext parts to enable more flexibility in the final assembly. I've also standardised on normal M6 hardware, so no need to source cage nuts or any other specialised hardware. Screws should preferably be of the button head type. Please note that I have not tested the parts with 1/4" hardware, but it should work. On the back of each Ext part there is also a slot for zipties to be inserted. This is handy for cable routing.

The whole system is held together with printable "bowties" that enables easy assembly and expansion.

Parts Breakdown:
Corner - This is the corner piece from which your frame will be built.
Bowtie - The small connector piece to tie everything together.
Ext-0 - A blank extension with no holes.
Ext-1U - An extension with standard 1U hole spacing on one side.
Ext-1UB - Same as the Ext-1U, but the 1U holes are on both sides.
Ext-1UH - 1U holes on one side with additional holes on the corner to allow for things like hinges and handles. 20mm pitch.
Ext-1UBH - 1U holes on both sides with the addition of the corner holes.
Ext-H - A blank extension with only the corner holes.

Additional parts and add-ons will be released by me as I need them, but please feel free to expand on this base. Add hinges, feet, cable trays, Gridfinity, etc. And please share your creations.

Printing Note:
1. The parts are already orientated to be printable with no supports.
2. I've been testing with 10% infill and 2 walls using PLA.
3. Please test your print settings as I have found that different brands of filament can result in some interference with the bowties.

The whole system was designed using FreeCAD. The original FreeCAD file is included below if the site allows it. If not it will be linked on the other popular sites.

Infiniframe - modular rack solution

0.2mm layer, 2 walls, 15% infill