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Vintage Test Gear and Workshop Equipment For discussions about vintage test gear and workshop equipment such as coil winders.

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Old 6th Jan 2017, 10:35 pm   #21
ManxDave
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Default Re: AVO 7 sluggish

If I stumble across a cheap set on non magnetic tools I may buy them but I am hoping not to have to go near a meter movement again. More fun and easier swapping dead capacitors and bringing life to old radios. Thanks again to all.
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Old 6th Jan 2017, 11:04 pm   #22
Phil G4SPZ
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Default Re: AVO 7 sluggish

Restoring life to dead and sticking Avometers can be just as rewarding!
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Old 6th Jan 2017, 11:14 pm   #23
ManxDave
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Default Re: AVO 7 sluggish

I love it now it is fully working, a great companion to the DMM and Chinese component tester but The movement is too delicate for me to enjoy working on. I haven't ventured near SMDs either!
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Old 7th Jan 2017, 3:08 pm   #24
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Default Re: AVO 7 sluggish

Spare blades included! Hmm! I have also seen ceramic ones advertised. I keep hoping to find old bronze tools (bomb disposal surplus!?) as i am not confident of even 'high tensile' aluminium being particularly tough.
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Old 8th Jan 2017, 1:56 pm   #25
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Default Re: AVO 7 sluggish

For the cheese head screws which hold Avometer movements on their front panels, a serviceable non-magnetic screwdriver can be made from the brass rod salvaged from a cistern ball valve. The tip end can be hollow ground and the valve end modified to leave a wing to be pressed into a file handle.

For smaller screwdrivers, the larger sizes of brazing rods are suitable.

With the increasing use of stainless steel, many grades of which are non-magnetic, there are probably common parts from which suitable rods can be salvaged.

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Old 8th Jan 2017, 2:03 pm   #26
Phil G4SPZ
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Default Re: AVO 7 sluggish

Quote:
Originally Posted by pmmunro View Post
For the cheese head screws which hold Avometer movements on their front panels, a serviceable non-magnetic screwdriver can be made from the brass rod...
The trick I use, which I think originated from you Peter, is to wrap a tight-fitting sleeve of thin cardboard around a standard screwdriver blade to prevent its being attracted to the magnet. Works perfectly for me! Getting the screws back into the holes is tricky, but I use a pair of curved stainless steel artery forceps to hold the screw in position from the side whilst tightening it with the cardboard-sleeved screwdriver.

It takes longer to read about it than to do it!
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