12-20 Tap Can You make One?

I think I may have a 1/2 dozen new plug taps. I'll check later today.

Sorry, I have 12-28
 
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12 and 1/4 are close in size.

For your screw tree and worn holes try a standard 1/4 20 tap.

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I will try the 1/4-20 on the screws from the planes for the tree. Thanks. When working on my planes, since I am restoring and reselling, I need to stick with the correct taps for that work though. Thanks
 
If you or someone has a lathe, turn some rod in that thread, harden it, making some poor-man's taps.

Come to think of it, since you're asking for this, it implies that you have a bunch of fasteners that screw into these holes (or are they nuts?) Anyway, depending on the number of holes you need to chase, you can use a few spare sacrificial screw "taps" to clean up the holes.
 
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Most of the time it is cast iron I am chasing. One of the guys on this forum has offered to make a couple of chasers for me if I can't find the taps
 
I just ordered 2. I was a little surprised though it looks like a Chinese company at least that is who the money went to. I thought St James Tool Co was a US company? Well I will either receive the taps or I just donated to someones account. Ha Ha.
 
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