Custom Tap Wrench

Having a wrench guide virtually eliminates the breakage of taps. Sherline’s web site has “Machininsts Tips”, and number 7 shows a wrench for holding small taps. I have made a similar wrench.
IMG_4315
The brass sleeve is the guide, and is held by a mill collet.

When I tap the four holes in a reel foot, spindle height is a problem. There is room for neither a standard tap wrench or a Jacobs chuck. The new wrench solves this problem.
IMG_4316
I was skeptical that the set screw would provide enough grip for the tap, but so far it has been OK.

Advertisements
This entry was posted in Threading. Bookmark the permalink.

2 Responses to Custom Tap Wrench

  1. Marcelo Jost says:

    I’ve grinded a small flat on my taps so the screw locks it in place. I published an article on a similar device in Home Shop Machinist. Nice blog. Congrats.

    • dave49 says:

      Marcelo,
      Yes, the flat is a good idea. I have been using small taps and free machining material and, somewhat to my surprise, have not had a problem with slip.
      Dave

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s