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'[EE]: Motor Speed Control'
2002\02\18@184613 by Colin Constant

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I'd like to build a variable speed control for a single speed Dremel tool.
Dremel makes a foot switch but I would like a "dial" type.  I did find plans
for an SCR unit with some form of feedback, but it would't run the tool at full
speed.

TIA
Colin

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'[EE]: Motor speed control'
2002\03\20@115817 by Colin Constant
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I'd like to try the Dremel diamond cutting wheel on my single speed  Dremel,
but they say in very emphatic print: "Do not run at over 20,000 rmp".  I don't
need permanent glitter, so I guess I need to slow down the machine.

So, can someone point me to ideas for home-built AC speed controllers?
(I've built enough line-powered power supplies, etc. to know the rules.)

Thanks much,
Colin

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2002\03\20@123755 by Jon Baker

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From: "Colin Constant" <spam_OUTColin_Constant-NRTakeThisOuTspamRAYTHEON.COM>

> I'd like to try the Dremel diamond cutting wheel on my single speed
Dremel,
> but they say in very emphatic print: "Do not run at over 20,000 rmp".  I
don't
> need permanent glitter, so I guess I need to slow down the machine.

220V motor speed controller:

http://www.redhouse.force9.co.uk/dexterspage/electr~1.htm

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2002\03\20@131246 by Bob Blick

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I use a lamp dimmer from the hardware store, about $4.

Cheers,

Bob

On Wed, 20 Mar 2002, Colin Constant wrote:

> I'd like to try the Dremel diamond cutting wheel on my single speed  Dremel,
> but they say in very emphatic print: "Do not run at over 20,000 rmp".  I don't
> need permanent glitter, so I guess I need to slow down the machine.
>
> So, can someone point me to ideas for home-built AC speed controllers?
>  (I've built enough line-powered power supplies, etc. to know the rules.)

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2002\03\20@132117 by Colin Constant

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Thanks, Bob.  For some reason I thought that wouldn't work.  Too easy, I guess.

Colin



I use a lamp dimmer from the hardware store, about $4.

Cheers,

Bob

On Wed, 20 Mar 2002, Colin Constant wrote:

> I'd like to try the Dremel diamond cutting wheel on my single speed  Dremel,
> but they say in very emphatic print: "Do not run at over 20,000 rmp".  I
don't
> need permanent glitter, so I guess I need to slow down the machine.
>
> So, can someone point me to ideas for home-built AC speed controllers?
>  (I've built enough line-powered power supplies, etc. to know the rules.)

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