The Mightymill is the name I gave my professional DIY CNC router build. It features a BT30 ATC CNC spindle, Durfill polymer concrete filling, and a fully custom frame design.
The Build Journey
My build has finally begun. The machine proved too large for the existing brick structure, so I had to construct a dedicated shed to accommodate it. I bought a garage engine block crane to lift the approximately 350kg structure into the shed.
Replication Method — Flattening and Rail Mounting
After moving and leveling the machine I had to make the surface of the aluminium extrusion flat in order to mount the rails. After making the surface flat I cut out the slot with a hot-knife for rail mounting.
Gantry Leveling
I used the metal epoxy gap-filling method to level the gantry vs the Y1 and Y2 gantry rails, with Mirror Glaze wax release to prevent permanent bonding.
Electronics Rewire
I decided to rewire the electronics from scratch. After wiring most of it on the desk I hung it on the wall and started connecting it to the CNC.
Making Chips
The machine is together, working and performing pretty well. As this is the first full CNC build, there are plenty of areas that need improvement — mainly making the Z-Axis stiffer and a better gantry-to-ballscrew connection.
Got questions about this build? Join the Discord and let’s talk.
