CNC hot wire foam cutter using Marlin 3d printer firmware Part 2

Опубликовано: 16 Март 2026
на канале: rcKeith
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The 4-axis CNC foam cutter until now required a Windows computer to run the software to send g-codes to the controller. Several times I have been asked if there is a way to run the foam cutter like a 3d printer by just inserting an SD card with the g-code.
In this video, Part 2 covers hardware and software for compiling the firmware, installation, configuration, calibration, homing, hot wire settings and cutting a test aerofoil.

Michael from Teaching Tech excellent video showing how to install Visual Studio Code, Platform IO and Auto Build Marlin
   • Updated Marlin firmware setup guide - VS C...  

Firmware here https://github.com/rcKeith/Marlin

Setting VRef and microstepping    • How to Build a USB Hot Wire CNC Foam Cutte...  

Checking the stepper motor wire pairs    • USB CNC Foam Cutter Troubleshooting and Qu...  

Sample G-code used in the demonstration
https://rckeith.co.uk/download/clark-...

Chapters
0:00:00 Intro
0:02:23 Hardware
0:12:42 Software to compile the firmware
0:15:07 Compiling the firmware
0:24:43 Bench test
0:39:04 Checking Axis Direction
0:44:31 Changing the Axis Direction in firmware
0:47:28 Calibration
0:54:43 Homing
0:56:20 Homing Fixed
0:56:56 Changing the homing direction
1:00:32 Dry Run
1:05:44 Testing the hot wire temperature
1:10:18 Live Run
1:12:43 Outro


A full post on my website covering the above. https://rckeith.co.uk/4-axis-cnc-foam...
Please note this is the first release so use with caution and run lots of tests. Any problems contact me via the comments or the website
Happy foam cutting