Computer Benchtable for gridfinity

Introduction

These are benchtable-like PC components holders for a gridfinity base. Aside from the components themselves (and the switches and LEDs you'd find on a PC case), everything is 3D-printable even without supports. No extra parts needed. Gridfinity base is not included (there are lots of them out there…).

The holders were designed to specifications from the corresponding standards (ATX, PCIe, etc), as far as available.

Where beneficial, the PC components are held by soft parts in order to reduce vibrations and noise. The printed parts you see in the pictures were printed/tested on a Prusa MK4S with 0.20mm STRUCTURAL, HF0.4 nozzle and two materials:

• Grey color: eSUN PETG Solid Grey, 20% Gyroid infill (I like Gyroid…)
• Black color: SUNLU TPU 95A, 15% 3D Honeycomb Infill

There should be no reason not to print everything in PLA or PETG. But beware, that some parts might need a little sanding, because TPU is more forgiving and has other shrinkage properties when cooling down.

Parts of the Benchtable

These are the parts currently available. If you need more, please don't hesitate to ask for additional parts!

Read the following sections for instructions on which parts you need.

Mainboard (Flex-ATX/mATX)

One of each: mATX_top_left, mATX_top_right, mATX_bottom_left and mATX_bottom_right.
Print as many instances of mainboard_standoff as you need for your mainboard to rest safely on the holder.

If you'd like a little holder for your power and reset button, plus power and hdd LEDS, you could try out the pcie_switch_card plus the bracket. It's designed to be inserted into a PCIe slot x1 (and upwards) and can hold two square (8.6x8.6mm) buttons and two standard LEDs.

BEWARE: Even though the card was carefully design according to the PCIe standard and tested on a mATX board, there's a chance of damaging your PCIe slot (e.g. when the angled shape of the card edges were not printed correctly). Use it at your own Risk!

Power Supply (ATX)

Depending on whether you want to have your PSU held horizontally or vertically, either print psu_h_base or psu_v_base.
The so called “plates” are used to hold the PSU in place. There's two versions for screwing onto the PSU, depending on the orientation you want your PSU to have, and a “plain” version. The plain version can be used to hold the back of the PSU (but really isn't necessary if you're using a screwed front plate).

HDD (3.5inch)

There's two versions of HDD holders, both stackable.

Version 1 needs a hdd_35in_v1_grid_adaptor, a hdd_35in_v1_base and some hdd_35in_short_pillar (eight instances if you want to go all out, but two or four will suffice). For stacking another HDD on top, you need another hdd_35in_v1_base and some hdd_35in_long_pillar (again, eight instances if you want to go all out, but four would suffice).
For each HDD you need six “pads”. Check the underside of your HDD if there are screwholes in the corresponding positions or not. The standard defines six positions for screwholes, but all disks I checked had only four. Print hdd_35in_pad_with_pin if there's a screwhole, to prevent the HDD from slipping. Print hdd_35in_pad_without_pin if there's no screwhole, to just rest the HDD on it.

Version 2 is a reduced version of the original v1, without sacrificing any functionality. It only has six pillars instead of the eight on v1. Also, you can put an HDD on the grid_adaptor itself, reducing the number of parts you have to print (and thus saving material). It is compatible with v1, meaning that the six pillars of v2 are in the same positions as the corresponding ones in v1.
For one HDD you need a hdd_35in_v2_grid_adaptor and six “pads” (same as with v1). For stacking another HDD on top you need a hdd_35in_v2_base, six “pads” and some hdd_35in_long_pillar (six if you want to go all out, but four would suffice).

Fan (120mm)

It holds one 120mm fan in a standing position. The parts hold the fan only through friction fit and accommodate for fans with different depths (the fan in the image is 25mm thick).

In v1, the fan_120mm_holder_v1 basically just rests on top of the fan_120mm_base_v1. Using TPU for the holder, this didn't seem very stable. Using a more rigid material like PETG or PLA might have a better grip here.

In v2, the fan_120mm_holder_v2 has tiny notches that slip into tiny grooves on the fan_120mm_base_v2. While this gives the desired stability with TPU, it might be rather impossible to assemble it with a rigid material like PETG or PLA.

For either version, add two instances of fan_120mm_plug if you want to mount a dust filter and/or a fan_120mm_shroud (yes, it's a burrito!). The shroud model itself is rather thin. It'll still be flexible when printed (at least with PETG). Feel free to make it thicker, if you want it to be more rigid.

Changelog :)

• 23.02.2025: Added plugs and shroud to the 120mm fan holder
• 17.02.2025: First publication (mATX board, PSU h&v, 3.5" HDD v1&v2, Fan 120mm v1&v2)