Hi all, I'm new to this site so apologies if this question has already been asked. I have a 240 volt makita die grinder & i would like to reduce the spindle speed to accomadate a rotary wire brush, which is not suitable for the current spindle speed of my die grinder.

Is there such an accessory available in the UK that i can just plug into the mains supply then plug my die grinder into the speed reducer?

Many thanks in anticipation, RoyH

You should be able to find one, they were used before variable speed electric drills became commonplace.

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wish i could, thats why i'm asking here

I couldn't find a ready-made unit, but if you can get it made up, here is the circuit for the thing you need.

Dead link removed by admin

Stoday is the man you need, he might be able to help.

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I started out with nothing, I still have most of it.

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You can use a dimmer (rated to handle the power) for this purpose. Don't expect to get the full motor torque when using it though.

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I have a dimmer from Lidl, Paget Trading model E4246, rated at 150W incandescent/300W halogen, but nothing specified for an inductive load.

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I started out with nothing, I still have most of it.

Directmail scam information site: http://astrocat.proboards.com/index.cgi?

thanks for your help guys, but i dont have the skill to build one myself so it would have to be a plug in & plag gadget.

The link you posted doesnt work for me Mooncat?

The link in my signature should work, but it doesn't, I'll have to ask UHM. The dimmer I have is a plug in type, I expect that bigger ones are made.

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I started out with nothing, I still have most of it.

Directmail scam information site: http://astrocat.proboards.com/index.cgi?

The link you posted does not work, perhaps the url is incorrect?

Your signature link was not working because-after you edit the signature, you have to untick the checkbox that says "do not automatically parse url's" or similar. On the old version of phpbb you did not have to do this, but you do on the newer version

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I bought a second hand 8A variac 30 years ago for £1. I've used it over the years with all sorts of drills etc. and it still works as good as new.

Try Ebay. I see there's an 8A variac going with a present bid price of £5.10. Click

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I should be dead; I've cheated the Grim Reaper yet again by surviving my third heart attack in June.

thank you very much for the help, but it looks a tad tired & rather bulky, so i will hang on in the hope that something more streamlined becomes available.

please dont think i'm being ungrateful.

would it not be easier to buy a different wire brush or a cheap drill for about £10 with 2 speed or variable speed

http://www.argos.co.uk/static/Product/p ... +DRILL.htm

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thats a great idea & the way i may go, many thanks.

I'd like to be able to slow down my bench drill, but dimmers/variacs wouldn't work with an induction motor.

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I started out with nothing, I still have most of it.

Directmail scam information site: http://astrocat.proboards.com/index.cgi?