@stevempotter built a machine along these lines. He used TB6600 drivers, was running GrblHal on some board and running at 40V. His big claim is significantly improved speed. Here is one topic where he writes about the speed of his machine, and I know there are others topics where he outlines more of his build. Note, he paired the machine with a water-cooled spindle, which is more powerful than a Makita router. Steve built his machine to be portable, and took it to Maker Faires.
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