K400 Laser Cutter

The K400 is my homemade large laser cutter based on the hobbyist generic CO2 laser, the K40.

These posts detail my design and build process along with some tips I learned that are not common knowledge. Should you be interested in following the same path, there are design files you can download and build upon!

Updates

0.7 Building the Enclosure

Eli Bukoski - 1/8/2026

Constructing the enclosure for the K400 Laser Cutter, including frame assembly, panel cutting, and ventilation system setup.

0.6 Building the Bed-Lift System

Eli Bukoski - 12/29/2025

Constructing the gantry system for the K400 Laser Cutter, including linear rails, timing belts, stepper motors, and laser optics.

0.5 Building the Gantry System

Eli Bukoski - 12/14/2025

Constructing the gantry system for the K400 Laser Cutter, including linear rails, timing belts, stepper motors, and laser optics.

0.4 Aluminum Extrusion Cutting

Eli Bukoski - 1/25/2024

Optimizing the cutting of aluminum extrusions for the K400 Laser Cutter frame.

0.3 Base Build

Eli Bukoski - 7/16/2023

First build log for the K400 Laser cutter, assembling the base structure from lumber and OSB plywood.

0.2 Laser Cutter Enclosure Design

Eli Bukoski - 6/20/2023

Final design step of the K400 laser, creating a safe enclosure and electronics cabinet.

0.1 Laser Cutter Design

Eli Bukoski - 12/10/2022

The start of the laser cutter project, reusing parts from a K40 laser cutter and a Stratasys Dimension SST 768 3D printer; combining them with 3D printed parts and aluminum extrusion to create a large format laser cutter. FEA of 3D printed parts too!