Make sure to practice in an open area with the high speed machine if you haven't used one before. (biggerpockets.com)
He drew on his gritty knowledge of machines in his drive to create his first patented invention — the high - speed machine tool — and then to design «intelligent» machines. (inc.com)
On low speed this machine takes very little power and still provides a great sound. (whitenoisemagic.com)