Texaswally Posted February 5, 2017 Report Share Posted February 5, 2017 (edited) I have converted my drill press to variable speed using a 3-phace motor and a VFD. I have a digital speed readout using a Hall Effect sensor and a magnet on the quill shaft pulley. Right now, I have a speed range of ~60 to 2650 RPMs. Will this be adequate for most woodworking tasks? I still have a couple of changes using the step-pulleys but I haven't measured the speeds available. Edited November 24, 2017 by Ron Dudelston tags added Fred W. Hargis Jr, Marv Rall and lew 3 Quote Link to comment Share on other sites More sharing options...
Chips N Dust Posted February 5, 2017 Report Share Posted February 5, 2017 That sounds pretty good. If you small diameter twist bits, you could probably go up to around 3000 to 3200 rpm Quote Link to comment Share on other sites More sharing options...
Gary Hanscom Posted February 5, 2017 Report Share Posted February 5, 2017 Here is a posted speed chart from Wood. Mag. speedchart.pdf Dadio and HARO50 2 Quote Link to comment Share on other sites More sharing options...
Marv Rall Posted February 6, 2017 Report Share Posted February 6, 2017 I did the same with a treadmill motor and speed control. Except for small diameter drill bits which run at high speed I find that most tasks require only speeds of about 100 rpm. One has to spend high dollar for those drill presses that have a lowest speed of 140 or so. Dadio 1 Quote Link to comment Share on other sites More sharing options...
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