Minimum volume ATX case V0.36 - now with a manual

I was looking for a small enough ATX case to either be carried in a backpack or fashioned in to a backpack and found nothing. 
So I figured I'd make my own. 
The case is 90% ATX standard compliant, as you can still add extension cards in almost every PCI-E slot( but the first - this is taken up by m.2 SSDs on a lot of modern boards though. The first PCI-Ex16 slot is actually in the second slot position on a lot of full size ATX boards these days). Thus, the volume is rather high for a SFF-case at 21.5 liters, but with the provided strap mounts, it can be fashioned in to a backpack. 

Keep in mind that I have printed one prototype with the enclosed .stls. You might find that the design needs adjusting on your printer. That said, the prototype is holding up well for 12 months now. 
One more thing: If you enjoy pretty cablemanagement, this case will be your endboss. I have made zero provisions for making things pretty, you'll be pretty much stuffing it all in to make it fit. 

Print settings: 
4 circumferences, 5 top and 6 bottom layers, 15% infill, 0.2mm height, 0.4mm nozzle diameter, 0.45mm extrusion. 250°C nozzle temperature with a hardened steel nozzle(try 245° with brass), 85-90°C bed temperature. Some parts will only fit on a mini+ printbed if you skip the skirt. Tested with dry(!!!) Tinmorry and Prusa PETG. All parts are sized up slightly (0.5%) to account for part shrinkage after printing. 

Note: The AGB/reservoir parts need to be waterproof. Print them with 50% of your usual speeds ( roughly 20mm/s for circumferences), high temps and high infill levels and test them prior to assembling the entire case for leaks. You can use a soldering iron to melt and seal leaky spots. It will never be 100% leak proof, but you can get it sealed well enough where water will not drip out but slowly evaporate away between layers. 

V0.36:
As promised, I finally adjusted the front IO panel so that the headphone jack should now work. I'd appreciate feedback on this, as I don't plan to reprint this part for my case. 
I've also changed the DDC cradle - the old part didn't nearly do the decoupling I wanted it to do, so the new one is designed around a shoggy sandwich. 
I also added a manual for assembly. 

Components needed(BOM): 
-Alphacool front I/O-panel for servers (https://www.alphacool.com/shop/enterprise-solutions-server/19-server-racks/zubehoer/28610/alphacool-front-i/o-panel-mit-usb-2.0-und-kabelsatz-fuer-servergehaeuse)
-Silverstone front I/O kit ( f.i. https://www.silverstonetek.com/de/product/info/computer-chassis/G11313530-RT/)
-Alphacool Eisbaer 240 LT ( I recommend getting better fans, the stock ones are very loud)
-2x 4mm thick acrylic sheets or similar, measuring approx 170.5x276mm ( I suggest cutting these to shape once you have assembled the rest of the case)
-8x M4x5mm socket head bolts( 6 are for PCI-E extension cards, subtract as needed)
-8x M4 hex nuts (3.3mm thick)
-12x M4 square nuts (2.2x7mm)
-4x UNC #6-32x12mm screws
-16x M4x16mm socket head bolts
-12x M4x8mm socket head bolts ( M4x10mm also fit)
-1x tube of some sort of Methmethylacrylate glue ( available at most hardware stores, check the epoxy section, or order UV curing Acrifix 1R0192 for a clear result)
-2x 1kg spool of dry(!!!) PETG

PC part requirements: 
ATX compliant motherboard with an m.2-Slot in the first extension slot (pretty much any modern motherboard)
a GPU no longer than 276mm and no wider than 150mm ( check the precise fit of your card in the step file!)
ATX compliant PSU ( highly, highly recommend a modular one)
3.5" harddrives no higher than 7.5mm for the alt bay

additional BOM with a second radiator and reservoir:
- relatively flat CPU cooler ( no higher than 60mm)
- DDC 4.2 pump
- shoggy sandwich kit ( with 8x countersunk(?) M4 bolts and nuts )
-2x Alphacool NexXxos ST25 240mm ( plus fans)
-I recommend using 90° fittings for GPU, CPU and the out of the reservoir/AGB, the radiators and the in of the reservoir need straight fittings ( you can fit up to 10/13 ¼" alphacool fittings). 
-3mm thick acrylic tube, measuring 30x240mm 
-9x M4 square nuts (2.2x7mm)
-9x M4x16mm socket head bolts
-1x ¼" Whitworth cap for the reservoir
I recommend 3m of 8/11mm EPDM hose with fold protection springs.
 

additional BOM without a second radiator: 
-1x 4mm thick acrylic sheet or similar, measuring 158x309.24mm ( you may want to drill holes in to this so the GPU can get more fresh air and so you can bolt it to the top of the case)

with 2 3.5" SSDs in the alt SSD bay:
-4x M4x5mm socket head bolts
-2x M4x16mm bolts 

For using the strap mounts: 
-16x M4 hex nuts (3.3mm thick)
-16x M4x16 socket head bolts 
-4x M6 Hex nuts 
-4x M6x40 socket head bolts

This entire case is printable with a Prusa Mini+.  Remember to dry your filament and set up your mini correctly! If you won't dry your filaments ahead of printing, the radiator holder's hex structures will become an absolute stringing nightmare. Don't say I did not warn you. 

I am not liable for any damages that may occur to you, your hardware or anything else. Use at your own risk.