Introducing MASS Premium The Modular Attached Storage Stack is a compact 3D printed NAS enclosure with expandable storage support up to 14 drives! Delivered by instant download, MASS is a digital product of ready to print files with limitless color options, unlimited spare parts and ongoing updates. Features Modular BodyStackable Drive expansion up to 10x 3.5” + 4x 2.5” drives. Highly CustomizableAdd a display, expand up to 14 drives and more with official MODs. Simple AssemblyMinimum Parts, Maximum Strength. 1 screw type for all. Vertical DesignMinimal foot print with straight up airflow and 140mm fans. Easy AccessIndividual drive access, tool-less panels for easy access. Fully 3D PrintableIn 210x210mm Print Volume Specifications MASS PREMIUM MASS FREE Drive Bays Up to 10x3.5” + 4x2.5" 4x3.5”+ 3x2.5" PCI-E Slot 1 Slot Low-Profile NA PSU SFX, SFX-L, FlexATX SFX, SFX-L Fans 4x 140mm or 120mm 3x 140mm or 120mm Motherboard ITX ITX CPU Cooler 66mm tall 55mm tall Printer Requirements Min. Bed 210x210, 240°C Nozzle Min. Bed 200x200, 240°C Nozzle Core Size (APU) 210x199x162mm 6.7L 203x199x151mm 6.1L Bay Module 199x162x150mm 4.8L 199x150x150mm 4.5L Display Mod 5", 7" Display, Adjustable Template included 5" Display, Adjustable Template included Additional 2.5" Bays Optional mounts for 2x2.5" drives in a 3.5" bay NA Mechanical PBT Optional: use keyboard switch as power button. NA Handles Low profile and standard options NA Required Hardware Screws: M3x20 (40pcs) - LinkPower Button: Ø16mm - Link PC Parts List: • Mini ITX Motherboard• SFX, SFX-L or Flex PSU• 3.5” HDDs • 140mm Fans (Up to 4 Fans)• 5in1 SATA Power and SATA Cables• [Optional] PCIE Sata Expansion Card or PCIE SAS HBA Controller• [Optional] 2.5” HDDs MASS Instructions View Instructions Download FREE Version on Printables here: ⬇️ MODCASE MASS v1.3 FREE FAQ ▶How much does it cost to print? 1-2kg of filament. MASS is tested on generic PETG. You can typically find 1kg rolls for $13/kg each (Link), $12/kg if you buy 4 (Link), $10/kg if you buy 10 (Link). ▶Premium vs Free difference? Premium has PCIE slot support, holds 5 drive per caddy, supports up to 14 drives, has handles, extra 2.5” drive adapters, Flex PSU bracket, addon Fan modules and ongoing updates. It supports development of more awesome designs. ▶Can Free version use premium modules? No. MASS Free Version was the original model without PCIE slot, making it slimmer by 11mm on the width of the tower, and thus not compatible with the PCIE equipped Premium model. MASS Free is still a potent enclosure with 4x3.5” bay support and can technically stack up to 8 drive bays using M.2 HBA. ▶Is MASS durable? MASS is built with an intimate understanding of the non-anisotropic strength properties of FDM. The parts are appropriately designed to overcome layer splitting issues by orientation and print settings. MASS development is committed also to ongoing improvement to ensure it is a durable and reliable option for your NAS setup. ▶How to connect more than 4 drives? To expand the beyond the 4 sata ports on most ITX motherboards, you can install a Low profile PCIE SATA card on the premium model. You can also use an m.2 SATA controller to add a few more. ▶Release Notes MASS v1.4 - April 15, 2026 For Premium version: Extended Side panel for mounting displays with SFX PSU’s. Extended Side panels for taller cooler clearance (+10mm, +20mm. +25mm) Alternate style front bay cover with minimised gap. 20mm feet option for increased bottom airflow Note: New models are in your optional folder. All updates are backwards compatible. MASS v1.3 - August 14, 2024 For both FREE and Premium versions: Improved fitment for all ITX motherboard types, including boards with integrated IO shield. (Top and Rear pieces updated). Mechanical Key Cap integrated into Rear punchout FlexATX PSU mount added to Free version New Optional Front with no 2.5" drives New Optional Front with 4x2.5" drives for core module with FlexATX. The core can be used as a compact standalone 4x2.5" bay nas. Note: Optional Front panels are located in the optional folder. All updates are backwards compatible. MASS v1.2 - April 24, 2024 For both FREE and Premium versions: New side panels with integrated displays Adjustable CAD templates for side panels HDMI / USB passthrough added to rear New 2-Split Bays module added Tool-less Drive retainer added Optional screw and locknut option for drive retainer Bays module has improved clearances for SATA connectors Note: The old single body Bays module is now in the optional folder. All updates are backwards compatible. MASS v1.1 - March 6, 2023 Free Version: Fan module for adding an extra fan to your build. Slat design Hat to go with the new fan module. Improved print files. Premium Version: New model with PCIE Slot support. Adapter for mounting 2x 2.5" in drives. Flex ATX PSU support. 5 Bay caddy. Improved print files Improved Bay cover.
