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-   -   Broken Tap (https://vansairforce.net/community/showthread.php?t=131091)

longranger 10-29-2015 11:52 AM

Here's a 10-minute tutorial on taps.

Rick_A 10-29-2015 01:04 PM

I had a tap break off not long ago. I was able to get it unscrewed by using a small pick to rotate the tap.

Look very closely were the tap is broken. Look for an edge where the groove (that runs the length of the tap) in the tape exists. If you can get a pointed pick or punch on a bit of the groove, gently tap it around with a small hammer.

It worked for me but I was sweating it for a while.

rv9builder 10-29-2015 02:41 PM

Quote:

Originally Posted by Mike S (Post 1025492)
As a rule, longer lead taper helps, but that is not the biggest issue.

Quote:

Originally Posted by longranger (Post 1025494)
Here's a 10-minute tutorial on taps.

Thanks, Mike and Miles! I have to tap my tail tie-down soon.

Stoo 10-29-2015 04:27 PM

Spiral Point Taps
 
It is best to use spiral point taps. These have angled cutting edges at the tip which direct the chips forward into the hole rather than into the flute which leads to clogging and binding. I get mine from MSC. Boelube is a good lubricant for tapping. Carbon steel taps from the hardware store are OK in the larger sizes but the small ones are too easy to bind up and break!

Stewart Willoughby,
6 firewall forward.

rvbuilder2002 10-29-2015 05:51 PM

Quote:

Originally Posted by Stoo (Post 1025596)
It is best to use spiral point taps. These have angled cutting edges at the tip which direct the chips forward into the hole rather than into the flute which leads to clogging and binding. I get mine from MSC. Boelube is a good lubricant for tapping. Carbon steel taps from the hardware store are OK in the larger sizes but the small ones are too easy to bind up and break.

+1 for this.

It is true that technic plays a big part when tapping, but using this type of tap for the small sizes provides some extra safety margin.


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