Hey everyone!
Like many of you, I use the Personal Use version of Fusion 360 for my CNC projects. The artificial feedrate limit on rapid moves (forcing them to match cutting feeds) was driving me crazy and needlessly increasing my machining times.
I know there are some scripts floating around to fix this, but I wanted something easier—no installation, no command line, just drag and drop. So, I built Speedy, a free web-based G-Code optimizer.
Over time, I kept adding features that I personally needed, and it just reached Version 5.9. I thought some of you might find it genuinely useful!
Here is what Speedy can do for you:
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Restore Rapid Moves: It safely removes the artificial limit. You can choose between “Force Classic G0” or a “Smart High-Feed G1” strategy (which is great because it keeps Constant Velocity / G64 active so your machine doesn’t stutter on curved retracts like Adaptive Clearing).
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Job Merging: If you don’t have an Automatic Tool Changer (ATC), you can drag all your separate toolpath files into Speedy, and it will stitch them together into one single job, inserting safe Z-retracts and pause commands (M0) for manual tool changes.
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Smart Verification Engine (My favorite feature): Before you run your code, Speedy scans it for common logic and crash risks. It detects missing Work Coordinate Systems (e.g., missing G54), warns you about rapid Z-plunges into negative space, checks if your spindle is actually on during a cut, and even flags Kinematic Risks(like tiny arcs at very high feedrates that will make a desktop machine stutter or lose steps).
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Easy & Fast: It runs directly in your browser. Just drag & drop your .nc files.
I built this mostly to scratch my own itch, but I’d love for you guys to test it out and let me know if it helps your workflow. If you find any bugs or have ideas for new checks the verification engine should do, please let me know!
You can find it here: https://gcode-optimizer.com
