Andy-H Posted July 15, 2023 Share Posted July 15, 2023 Is it possible to use an external speed control to slow down a rotary tool which already has a built in speed selector ? I have read that using a dimmer or other such controls can result in burnt out brushes or windings. I have a Lidl rotary tool which is great other than the slowest speed seems to be >13,000 rpm and even then it seems to speed up after a short while. It’s fine for cutting & grinding etc but just too fast for more intricate work. I have an old Minicraft drill to fall back on but wondered if anyone had found a way to slow these tools down. Quote Link to comment Share on other sites More sharing options...
J D 8 Posted July 15, 2023 Share Posted July 15, 2023 They are basically not designed to run slow and if you work them hard in a slow speed something will give as you suspected. Quote Link to comment Share on other sites More sharing options...
Philip Lewis 3 Posted July 15, 2023 Share Posted July 15, 2023 (edited) That's strange, mine is also a lidl (Parkside) rotary tool but on the first setting it's very slow, maybe 1,000 or even slower. Edited July 15, 2023 by Philip Lewis 3 Quote Link to comment Share on other sites More sharing options...
Andy-H Posted July 15, 2023 Author Share Posted July 15, 2023 Fair enough. Cost me less than £30 so I can’t complain ! Many thanks. Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted July 15, 2023 Share Posted July 15, 2023 My Lidl one works fine too. Take the thing back. Quote Link to comment Share on other sites More sharing options...
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