Arc Reactor – Cryo Series MK1 & MKIV

Arc Reactor – Cryo Series MK I & MK IV

High-detail custom Elite Liquid pump covers designed as a true centerpiece for any PC build.

I created this project with a simple goal in mind: to design something I would actually want in my own PC, balancing detailed design with practical 3D printability.

There are four variants: two inner cover designs and two outer cover designs, offering flexibility for different setups.

All models were designed from scratch in CAD for the Cooler Master Elite Liquid custom pump cover design contest, and have been printed and tested as shown in the photos.

Features

• High detail

• Multiple variants 

• Easy and tool less assembly

• Multi-color possibilities 

• Safe and secure 

Design & Printing Details

Recommended Settings:

• Layer height: 0.2 mm

• Infill: 10–20% (*also depending on how much light you want to block.)

• Supports: Only where necessary

• Print orientation: As provided in the files

• Material: PETG recommended

• Nozzle: 0.4 mm

• Bed adhesion: Not required (use a brim if needed or increase the bed temperature to 62 °C)

• Brim: use a brim for the following file if needed: Arc_Reactor_Wire_mk1 or reorient  

The wall thickness is roughly the same as the original. You can print the main covers in transparent or multi-material filament, but basic white also works very well and provides good diffusion. I recommend printing the parts that need to light up in basic white. I’ve added clips showing the diffusion on my printed models, printed in basic white and using even a very dim LED.

I used 15% infill, but if you want to block more light so the print has higher contrast when it lights up without painting your model, I recommend using a higher setting.

I recommend not printing all the parts at once to achieve optimal quality.

Assembly instructions

Mark 1 – All parts have a click-fit or tight-fit mechanism, so you can simply snap everything together. There are alignment features on some parts to prevent them from moving or rotating after assembly.

For the Mark 1, there are two coil versions: one with a separate wire so you can customize the color, and one with the wire already modeled for easier and faster printing, which you can paint afterward like in my example.

Mark IV – This consists of only two main parts, making it very easy to assemble. The front cover uses a twist-and-lock mechanism. Depending on your printer’s accuracy, assembly will either be easy or require a small amount of force to lock it in place. I tested three different tolerances; the version used can be easily assembled by hand.

Thank You / Enjoy Printing!

I’d love to hear your feedback, and if you have any questions, feel free to reach out.