Generic List of Feed Rates

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02 Jun 2018 14:37 #111458 by MakingStuff
I just finished my DIY CNC plasma table and I'm using a cheap Harbor Freight plasma cutter to get started. Does anyone know where I can find a generic list of feed rates (Amps / IPM per gauge). I know each machine is different but if I can find something close that would help me get my machine dialed in. I'm using LinuxCNC, Sheetcam and no torch height controller at the moment.

Thanks,
Bob

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02 Jun 2018 20:26 #111467 by tommylight
Hypertherm has plenty of them, downloadable at will and free.
www.google.com/search?source=hp&ei=7fwSW...3i30k1.0.e4Hp6SdXk88

Plenty of them also from Torchmate and ESAB.

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03 Jun 2018 00:21 #111491 by MakingStuff
Thanks, that's exactly what I needed.

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03 Jun 2018 00:56 #111494 by rodw
Replied by rodw on topic Generic List of Feed Rates
I would expect that the Hypertherm tables will be 30% faster than yours so do a test on one thickness and compare. Write some gcode that does a series of cuts about 3-4" long at different speeds and pick the best.

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04 Jun 2018 21:36 #111626 by tommylight
Actually when using an HD 3070 ( 100A hypertherm ) with original electrodes and nozzles i could push it 20 to 30 % faster with not much change in cut quality, so they are good. That is using air only through a dryer, never used it with Nitrogen or Oxygen. Would have been interesting to see how far it can go.

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