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Driving Small Taps

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larry phelan 116/01/2020 13:08:55
1346 forum posts
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I made up a simple guide in the form of a short piece of 1/2 " square with a number of holes drilled in it to suit a range of taps, each hole being a clearance fit for the tap in question. Just clamp it in place over the hole to be tapped and away you go, no more lopsided tapping..

I know this would work for all situations, but when it does, it,s hard to beat.

JA16/01/2020 13:15:50
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1605 forum posts
83 photos

dscn6476a.jpg Hold guide with left hand and use the right for the wrench. I also use a little finger wrench that is turned between finger and thumb.

Both wrenches are also used in the lathe with a centre in tailstock as a guide.

I have used the above to tap 12BA holes into steel and have yet to break a tap.

JA

Edited By JA on 16/01/2020 13:22:21

Edited By JA on 16/01/2020 13:22:55

Edited By JA on 16/01/2020 13:25:02

Edited By JA on 16/01/2020 13:25:28

Downunder Dave16/01/2020 19:52:57
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7 forum posts
5 photos

Thank you all, for the great suggestions. It goes to show that everyone comes up with their preferred way of doing things. I will try a couple of your ideas. Being an amateur machinist, I will try the simple ways first. I like the guide idea, and certainly I see the merit in tapping the hole after drilling it whilst set up. That makes a lot of sense to me.

This is a great forum ,thank you again.

Dave

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