One tool - two uses (pics)

[mklotz]

A recent article in "American Machinist" reminded me of something I made twenty years ago for a

friend. The body of the tool is a through-drilled cylinder with one quarter of its body

accurately milled away.



Insert the punch, made from hardened drill rod, into the hole, align the edges of the cutaway

portion with your scribe lines and voila (not viola - a musical instrument), the punch mark is on

the intersection of the lines.



But wait, there's more! (He shouts, madly waving his Ginsu steak knife.) Ever had the problem of

having to align to the edge of a piece of stock angled in the milling machine vise? Drop the

body of the punch over the edge and use the edge finder to locate on its circumference. Since

the diameter of the punch is known (or can be easily measured), it's a simple matter to locate

the spindle axis directly over the edge.



The one shown is massive enough to not move under the friction of the edge finder but, if you

have problems, apply a dab of oil or grease to hold it in place with the capillary action. (I

have a miniature version that requires this to remain in place.

[HTRN]

That is slick! I've got to save those photos for my files..


HTRN

[IOWOLF]

Perhaps this is the start of a tips book 3.

What do you think Craig?

[John R]

That's a neat gadget. Thanks for showing it
John R

[lazlo]

Originally Posted by mklotz

Ever had the problem of having to align to the edge of a piece of stock angled in the milling machine vise? Drop the body of the punch over the edge and use the edge finder to locate on its circumference.

Too funny -- that's Japanese corner-finding Edge Finder that was extensively discussed on PM last week:

Accurately locating angular holes?

The one shown is massive enough to not move under the friction of the edge finder but, if you have problems, apply a dab of oil or grease to hold it in place with the capillary action.

Just bore two holes and add round magnets :

[mklotz]

Originally Posted by lazlo

Just bore two holes and add round magnets :

[

Where can I buy brass magnets? I know, the same place they sell aluminum magnets

[lazlo]

Argh -- network problem.

[lazlo]

Originally Posted by mklotz

Where can I buy brass magnets? I know, the same place they sell aluminum magnets

Uhhh, I mean you would epoxy round magnets into the flat segment you cut out of the brass ring. Am I missing something?

This is what the inside of the Japanese edge finder (the "Cornerizer" ) looks like:

[mklotz]

No, Lazlo, I'm talking about the magnets that STICK to the brass and aluminum parts I'm making.

[miker]

"No, Lazlo, I'm talking about the magnets that STICK to the brass and aluminum parts I'm making."

Marv, THOSE magnets need some oil or grease to hold them in place by the stickery action.

Rgds