Spin the stock. Read the signal.
Free (and pro version) 4-axis rotary CAM and G-code generator for DIY CNC. Turn an STL or STEP into simultaneous 4-axis rotary toolpaths, wrapped engraving, and a verified material-removal simulation on Windows, without a CAM subscription.
⚠️ EXPERIMENTAL. RotatoCAM only writes a G-code file; it does not run your machine, and its output is only a suggestion you must verify. CNC machines are dangerous. You alone are responsible for inspecting every program, air-cutting first, and operating safely. Provided AS-IS, with no warranty.
▶ New here? Watch Rotary CNC CAM Made Simple: The RotatoCAM Walkthrough
Grab the free Community Edition at rotatocam.com. Unzip and run: no install, no license, no expiry.
Everything else lives there too: what it does, the how-to, the gallery, the safe-testing guide, supported controllers, and RotatoCAM Pro.
▶ Quick start: STL to 4-Axis Rotary G-code in Minutes
Material-removal simulation showing the Pikachu model between the remaining stock ends.
Rotary toolpath preview with the pawn model and chuck fixture in view.
▶ Watch toolpaths get generated from an STL model (Twitch clip)
Engraving playback with the cutter, toolpath, and G-code readout visible.
RotatoCAM on a DIY 4th axis. Click any thumbnail to watch on YouTube.
▶ Tiki carved in one pass on the rotary
Continuous rotary spiral finishing: the A axis keeps turning while the cutter walks along the part.
▶ Continuous 4-Axis Rotary Spiral Finishing (grblHAL)
 Walter White bust, rough → spiral finish |
 M4 flash hider, rough → spiral finish |
 V8 camshaft, rough → spiral finish |
 🚨 BREAKING NEWS: pushing the rotary to its limits |
The first rotary experiments on a DIY 4-axis mini mill, before RotatoCAM had a name.
 First 4th axis toolpaths on the DIY mini mill |
 4th axis rotary: milling a spine keychain |
Because some CAM "deals" feel a little like this. A totally fictional undercover documentary:
▶ 🕵️ UNDERCOVER: The CAM Cartels | Inside the Shady World of Expensive CAM Software
Shorts: Undercover with the CAM Cartels · The CAM Smugglers at the Marina · The Laundromat CAM Informant · Monthly CAM Payments at the Motel
The sequel, with masked informants and real (paraphrased) forum testimony:
▶ 🕵️ UNDERCOVER: The CAM Cartels | The Bake Sale Files | Who Rents the Fourth Axis? 💸
Shorts: The Blur Box Is Running Late · They Rented My Own Wheel Back To Me · Nobody Says The Number
Parody. All characters, companies, and product names in it are made up.
Unlocking locked cutting machines (KillCric open firmware)
 I Cracked Open a Locked CNC Machine: It Runs GPLv3 Software They Won't Release |
 They Locked This Vinyl Cutter Behind a Cloud, So I Tore It Open |
 Turning a Cricut Expression Into a Real CNC Machine |
 No Account, No Cartridges, No Subscription: KillCric Open Firmware |
The 3-axis days: 3018 mini mill archive
Before the rotary, there was a little 3018. Mostly live streams.
- Milling The SOA Reaper on a 3018 CNC
- 3018 Toolpath CNC MILLING W Fusion 360 Toolpaths
- 3018 cnc mill and Fusion 360 make a bee thing!
- 3018 Toolpath Simulation in Fusion 360!
- CNC MILLING a baby sword plaque
- CNC MILLING a baby monkey from cherry wood using fusion 360 toolpaths
- CNC MILLING a cherry wood pipe on the 3018 mini mill
- CNC MILLING a cherry wood pipe on the 3018
- CNC MILLING a pipe from holly wood on the 3018 (stream2)
- CNC MILLING a pipe from holly wood on the 3018 cnc mill
- 3018 cnc v carving a sign
- 3018 MILLING SMALL KEYCHAIN TEST
- 3018 cnc mill live stream, milling random stuff!
- 3018 cnc milling random stuff
- 3018 cnc milling a monkey from holly wood with fusion 360 toolpaths!
- 3018 cnc milling a monkey from holly wood with fusion 360 toolpaths! (another stream)
- 3018 cnc mini milling a monkey mask in wood
- live 3018 cnc mill, some Holly Wood, fusion 360!
- 3018 cnc mill, 3d carving a skull in acrylic rod
- 3018 milling a 5" ashtray from wood cutting board
- engraving stuff on the 3018 mini mill/router
More on the channel: @REVJMONEY on YouTube
Built in Myrtle Beach by Rev. J. Money · https://rotatocam.com/ · therealrevjmoney@gmail.com