RPi 4B + MKS DLC32 V2.x + DC/DC Converter

WebLaser Controller Enclosure — Raspberry Pi 4B + MKS DLC32 V2.x

A compact, print-in-place-friendly enclosure that houses the complete electronics for a browser-controlled laser cutter / CNC: a Raspberry Pi 4B, an MKS DLC32 V2.x controller board, and a DC/DC step-down converter (12 V or 24 V input → 5 V for the Pi). Active cooling pulls air through the entire case to keep both the Pi and the stepper board cool.

It is designed for the open-source WebLaser project — a web-based laser cutter control that runs directly on the Raspberry Pi, so you can draw, edit and laser from any browser on your network withou the need of installing additional software like Lightburn: https://github.com/arturDUS/WebLaser

📦 What's in the model

• Base — mounts all three boards

• Lid — simple snap-on fit (no screws needed)

🧩 Fits / houses

• Raspberry Pi 4B

• MKS DLC32 V2.x stepper/laser controller board

• DC/DC buck converter (12–24 V → 5 V) to power the Pi

• 12 V cooling fan

✨ Features

• Screw-mounted boards for a solid, rattle-free fit

• Tool-free snap-on lid — just click it on, no screws

• Break-out cable entries at the rear: thin tabs that you pop out with a small screwdriver to route the stepper motor and endstop wires into the case — only open the ones you need

• Through-flow cooling: the 12 V fan guides air through the whole enclosure so the Pi and the stepper board are cooled by a single airflow path

🖨 Print settings

• Material: PLA (PETG also works if your electronics run warm)

• Supports: minimal — the parts are designed to print with little to no support [only required at: e.g. the rear cable break-outs / fan grille — adjust to your model]

• Layer height: 0.2 mm

• Walls / top / bottom: 3 perimeters, 4 top/bottom layers

• Infill: 15–20 %

• Orientation: print the base on its bottom face and the lid flat (outside down) for the cleanest finish

🔩 Required hardware

• [4] [M3 × 16 mm] screws for the Raspberry Pi

• [4] [M3 × 16 mm] screws for the MKS DLC32

• [4] [M3 × 16 mm] screws for the DC/DC converter

• [4] [M4 × 16 mm] screws for the fan

• 1× [40x40 mm] 12 V fan

• optional: heat-set inserts if you prefer

🛠 Assembly

1. Pop out only the rear cable break-outs you need (small flat screwdriver).

2. Screw the Raspberry Pi, MKS DLC32 and the DC/DC converter onto the base.

3. Mount the 12 V fan so it pushes/pulls air through the case.

4. Wire it up, route the stepper/endstop cables through the rear openings.

5. Click the lid on — done.

💻 Software

Pair it with WebLaser (browser-based laser control for the Raspberry Pi): 👉 https://github.com/arturDUS/WebLaser — includes a 1-line Raspberry Pi installer with autostart, so the UI is reachable from any browser on your network.

⚠ Safety

A laser can blind, burn and start fires. Never operate the machine unattended, use proper eye protection and fume extraction, and make sure your power supply, wiring and fan are rated for your setup.