When I loaded the G code onto the controller it gave me an estimate of 3 hours and 45 min, I figured that must me a error, so I pressed go, and started a timer, the actual machining time ended up being an hour and 45 min. All of that being said, I was expecting the job to take about 30min on the onefinity. On my shapeoko I would run a feed rate of 90in/m (2286mm/m), fusion would estimate that it would take 30 min, carbide motion would say an hour and 10 min, and it would actually finish up in about 45 min. I know that the machining time feature in fusion isn’t particularly accurate, so I usually assume that it’ll be off by about 25-50%. I got out my machining calculator, and came up with a federate of 200in/m (5080mm/m), the fusion machining time estimate was 15 min. I have a part that I machine multiple times per day, I’ve run the tool path hundreds of times and gotten it pretty dialed in. My main reason for upgrading was reliability, but given that the Onefinity is a much for rigid machine, and my spindle is a quite a bit more powerful than the router, I figured that I would be able to run it little faster as well.
Has anyone had any issues with inaccurate feed rates when running G code posted from Fusion 360? For context, I just upgraded to a Journeyman X50 and a water cooled spindle from a Shapeoko 3 XXL with the HDZ and Makita router.
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