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 I programmed a 5-axis part. Backplot said 7m58s and Verify said 8m01s. Two tools agreeing, so it should be correct, right? Then I ran it on a UMC-750 and it took almost 11 minutes.

The reason is simple. Mastercam divides distance by feed rate. Your machine has to accelerate, decelerate, slow down for corners, wait on the rotaries, change tools and spin up the spindle. None of that shows up in backplot.

So I built a free tool that accounts for it. Drop in your Haas G-code and you get a cycle time estimate that’s much closer to what the machine will actually do, broken down operation by operation. There's no sign-up, no email to submit, nothing to pay. Your G-code never leaves your browser. No strings attached. Only ask is if you find it useful and are looking for Mastercam training, check out our content! Otherwise, just leave some feedback on the tool!

How close is this tool to real cycle times? My 5-axis Lesson 4 part estimated 24.5% too fast in Mastercam. This tool calculated within 3% of the real run. If you’re quoting off backplot, that’s a problem. You're either going over budget or missing out on jobs. 

It’s calibrated on a Haas UMC-750 with 36 timed test programs, and it even accounts for G187 smoothing. Calibration and how I built it are coming in future videos. I may add other machines to this tool depending on feedback.

Bottom line: if you quote or plan jobs off Mastercam’s cycle time, check them here first.

🔗 Free Haas Cycle Time Estimator: https://caminstructor.com/haas-cycle-time-estimator

🎓 Mastercam online courses: https://caminstructor.com/mastercam-courses

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https://caminstructor.com/mastercam-training-corporate