DIY Platform CNC


Platform CNC Production


When I designed and built this machine for myself, I had no idea of the overwhelmingly positive response it would receive! After being asked by friends and people in the online community if I could reproduce one for them, I decided to do an Initial Run of 5 machines. By the time I placed the order, I had 12 people signed up and about 20 people on a waiting list!

Fast forward a year: I have continued to produce these machines in batches of 12 and have just completed the 15th Production Run!


For the original build thread that started it all, please go here:


Original Build Thread


Machine Specs (as built)


30” X 48” X 5.5“ Cutting Area (300 IPM)
Fast-Travel Precision Acme Threaded Rods
Gecko G540 4-Axis Stepper Motor Driver
Precision CNC Bent 3/16” Linear Rails
Optional Dual or Single Drive Y-Axis
48V 12.5A Switching Power Supply
4 High-torque NEMA 23 320 oz-in Motors
DumpsterCNC Acme Anti-backlash Nuts
Large Twist Lock E-Stop Button
Dual 80MM 120V Cooling Fans
Front Mounted Power Receptacle and Switch
Laser Cut Steel and Aluminum Construction
Rubberized Non-Slip Adjustable Machine Feet
Optional Function Based Insert System



This kit contains all of the digitally fabricated aluminum and steel required to build the Platform CNC. This includes all handwork, surface prep, paint and powder coating.


Upon purchasing a kit, you will receive the detailed assembly guide complete with step by step instructions, wiring diagrams, etc...


You will also receive an invite to join the new Platform CNC Owner's Group! Here current owners are encouraged to share information and discuss topics related to the Platform CNC. As well as add to a growing library of Platform related files including insert geometry and head configurations.

I am very excited to announce that CNCRouterparts has now put together a complete parts bundle that includes all of the additional parts required to complete the machine at a savings of over $100! This means you will no longer need to source components from multiple vendors! You will just need the Grunblau Platform Kit and the Complete CNCrouterparts bundle located here!


CNCRP Platform CNC Bundle


Please review the Bill of Materials to see an itemized list of all of the components required to complete the machine.


The Grunblau Platform Kit is $1960 (plus shipping)

Your deposit will hold your spot and will be deducted from the cost of the kit.


The total cost to complete the machine is right around $4k.



Production Run # 16 Deposit $360

(All spots are taken)




Please check back soon for Run #17 or email me if you wish to receive a note when the next run is ready!




Shipping costs will depend on your location.


Not currently available outside of the US, unless you have made the necessary arrangements with me regarding shipping. (Please email me if you are interested!)



Platform CNC Leg Detail

Platform CNC Rear Detail

Grunblau CNC Explode