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Old 05-23-2017, 01:39 PM   #1
Tom Wesenberg
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Default Homemade Tools Ammeter Cover Remover

I had to fix a couple ammeters and both the original and repro had super tight covers on them, so I had to make a special tool to get them apart.

Note the repro is aluminum and has no black paint on the brass inside the case. I spent more time fixing this one than it was worth. The face also uses white for the marking, while originals are silver.

I got both the pointers centered, but hope they stay that way after the post office throws them around and drops heavy boxes on top of them.

I used my Sterrett 3" hole saw to cut two circles of 1/8" thick aluminum, then cut the 1 5/8" center hole out on my lathe. I then had to use my Dremel to grind away 5 notches for the 4 tabs and alignment bump in the case. The other plate I used a #20 bit to drill two holes 1" apart, then used a #7 bit and drilled two holes for the 1/4 x 20 eye bolts.

This works much better than a screwdriver and hammer.
Attached Images
File Type: jpg Ammeter 1.jpg (50.0 KB, 122 views)
File Type: jpg Ammeter 2.jpg (56.8 KB, 114 views)
File Type: jpg Ammeter Face.jpg (39.1 KB, 120 views)
File Type: jpg Ammeter Repro 1.jpg (55.1 KB, 122 views)
File Type: jpg Ammeter Repro 2.jpg (58.8 KB, 122 views)
File Type: jpg Homemade Tools Ammeter Cover 1.jpg (56.2 KB, 135 views)
File Type: jpg Homemade Tools Ammeter Cover 2.jpg (40.7 KB, 139 views)
File Type: jpg Homemade Tools Ammeter Cover 3.jpg (53.9 KB, 125 views)
File Type: jpg Homemade Tools Ammeter Cover 4.jpg (52.1 KB, 122 views)
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Old 05-23-2017, 01:42 PM   #2
Y-Blockhead
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Default Re: Homemade Tools Ammeter Cover Remover

Very nice Tom. I love homemade tools.
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Old 05-24-2017, 11:11 AM   #3
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Talking Re: Homemade Tools Ammeter Cover Remover

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Originally Posted by Y-Blockhead View Post
Very nice Tom. I love homemade tools.
So do I.
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Old 05-24-2017, 11:58 AM   #4
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Default Re: Homemade Tools Ammeter Cover Remover

Very cool! Now if only they would make a quality ammeter we wouldn't have to take them apart new haha. I think its one of those parts that I dont think we would mind paying more for - I sure wouldn't for a meter that fit, was correctly made internally, and somewhat accurate out of the box.
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Old 05-24-2017, 08:17 PM   #5
henry's 31
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Default Re: Homemade Tools Ammeter Cover Remover

As always Tom, great tool. Is your background engineering? I admire your great ideas! Thanks for sharing!
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Old 05-24-2017, 08:30 PM   #6
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Default Re: Homemade Tools Ammeter Cover Remover

I chuck my ammeters in my lathe 3 jaw chuck, being careful not to get it too tight and make dents. I then use a screwdriver next to the chuck jaws and pry the cover a small amount then go to the next jaw and do the same until the cover comes off. It takes about 30 seconds to remove a cover with no damage to the ammeter or cover.
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Old 05-24-2017, 08:43 PM   #7
Tom Wesenberg
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Default Re: Homemade Tools Ammeter Cover Remover

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Originally Posted by henry's 31 View Post
As always Tom, great tool. Is your background engineering? I admire your great ideas! Thanks for sharing!
Thanks, Wish it was, but no, I've just liked to do machine work and work with electronics and make tools that help get the job done better, quicker, and easier.

Last edited by Tom Wesenberg; 05-25-2017 at 11:09 AM.
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Old 05-25-2017, 10:54 AM   #8
henry's 31
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Default Re: Homemade Tools Ammeter Cover Remover

You continue to give us great ideas in how to make the job easier. Thanks again!
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Old 05-26-2017, 12:50 AM   #9
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Default Re: Homemade Tools Ammeter Cover Remover

Sweet
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Old 05-26-2017, 06:22 AM   #10
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Very clever Tom.
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Old 05-26-2017, 07:20 AM   #11
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Default Re: Homemade Tools Ammeter Cover Remover

Yes, very clever and it worked well too!!

Thanks much. We'll have to start referring to Tom as 'K R Wesenberg' Henry would have had you teaching at the Ford trade school in Dearborn. He would have been impressed and wanted to hang out with you!

Last edited by Jeff/Illinois; 05-26-2017 at 08:57 AM.
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