Free, easy software for your Genmitsu 3020
The 3020-PRO MAX is a step up from a 3018: a 300 × 200 mm bed (300 × 205 mm on the V2) and a 2,000 mm/min top speed. Surfacecraft is free, easy CNC design software in your browser: draw or import, choose a bit for each shape, check the 3D preview and download G-code.
For the 3020-PRO MAX and 3020-PRO MAX V2. Nothing to install. Mac, Windows, Linux and Chromebook. Updated .- Work area
- 300 × 200 mm (V2: 300 × 205 mm)
- Firmware
- GRBL 1.1 based (V2)
- Spindle
- On the V2, a 300 W spindle (up to 12,000 rpm) that GRBL controls, so speeds go in the G-code.
- Preset
- Genmitsu 3020-PRO MAX V2
- Output
- G21 G90 G94 · M3 S… · one .nc per bit
What to know about the Genmitsu 3020
Limit switches on every axis
The V2 has six, on both ends of X, Y and Z; the original has three. Home it, then zero on your stock where the G-code header says.
Import what you already have
Bring in SVGs from Inkscape, Illustrator, Canva or a free clip-art site, then give each shape its depth and bit.
Set it up once
Start from the Genmitsu 3020-PRO MAX V2 preset. On the original, change the work area to 300 × 200 × 72 mm. Every project after that uses it.
Genmitsu 3020 feeds and speeds to start with
Starting points for solid carbide 2-flute end mills, worked out for the Genmitsu 3020-PRO MAX V2 preset and kept under its 2,000 mm/min top speed. They're the numbers Cut Studio suggests when you pick the bit and material.
| Material | ⅛″ 2-flute end mill | ¼″ 2-flute end mill |
|---|---|---|
| Softwoodpine, spruce, fir | 1,620 mm/min 7,500 rpm · 1.51 mm per pass | 2,000 mm/min* 4,950 rpm · 3.02 mm per pass |
| Hardwoodsoft maple, cherry, walnut | 1,230 mm/min 7,500 rpm · 1.51 mm per pass | 2,000 mm/min* 5,617 rpm · 3.02 mm per pass |
| Plywoodbaltic birch, birch plywood, cabinet plywood | 1,500 mm/min 7,500 rpm · 1.51 mm per pass | 2,000 mm/min* 5,263 rpm · 3.02 mm per pass |
| MDF / particle boardmdf, hdf, particle board | 1,800 mm/min 7,500 rpm · 1.51 mm per pass | 2,000 mm/min* 4,385 rpm · 3.02 mm per pass |
| Acrylicacrylic, cast acrylic, plexiglass | 1,050 mm/min 7,500 rpm · 1.27 mm per pass | 1,620 mm/min 7,500 rpm · 2.54 mm per pass |
Chiploads come from bit makers' published ranges (Onsrud, Amana Tool, Whiteside), kept at the gentle end for hobby machines. * The machine's top speed holds the feed here, so the spindle is slowed to keep the chips thick. Every machine and bit is a little different: listen for chatter on a test cut and adjust.
From box to first cut
Surfacecraft makes the G-code. A sender runs it: the one that came with your kit, gSender or Universal Gcode Sender (all free), or Surfacecraft itself over USB with Pro.
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01
Create a free account Open Cut Studio in your browser. Nothing to download.
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02
Add your machine Pick the Genmitsu 3020-PRO MAX V2 preset. Check the top speed against your manual.
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03
Make a design Draw text and shapes or import an SVG. Give each shape a depth, a cut and a bit.
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04
Check the 3D preview It's built from the real G-code, so what you see is what the bit will do.
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05
Download and run Load the bit the file's header names, zero where it says, and run it in your sender.
Genmitsu 3020 test G-code
A first cut to check your machine before you design anything: a 40 × 30 mm pocket and a 40 × 30 mm outline, both 3 mm deep, with a ⅛″ 2-flute end mill in pine. Made by Cut Studio with the Genmitsu 3020-PRO MAX V2 preset, at the softwood numbers in the table above, and it runs in about 2 minutes.
Clamp a piece of pine at least 100 × 60 × 6 mm. Zero X and Y on its front-left corner and Z on its top, then run the file in your sender.
A keychain or small tag
Cut out a shape, engrave a name with a V-bit and add tabs so it doesn't fly off. Small, fast, and it shows off the whole workflow.
Genmitsu 3020 software questions
Surfacecraft for design and G-code, in your browser, free. To run the file, use a free sender such as Candle, gSender or Universal Gcode Sender, or send it over USB with Surfacecraft Pro.
Yes. Import an SVG, then set each shape's depth and bit. Text, rectangles, circles and lines can be drawn right in the editor too.
No. Choose the bit and material and Surfacecraft works them out, kept under the 3020's 2,000 mm/min top speed.
Yes. Designing, toolpaths, the 3D preview and G-code export are on the Free plan with no time limit. Pro adds sending jobs straight to the machine, more machines, AI tools and commercial use.
Free software for other machines
Your Genmitsu 3020 is ready. Now it has software.
Design and G-code are free, with no time limit. Send to your machine over USB with Pro.