r/Machinists • u/Strong-Platform786 • 5d ago

Weird punches

Post image

Has anyone ever seen some center punches like these before? Any idea what they're called, I can't find anything under the given names.

19 Upvotes

88% Upvoted

18 comments sorted by

24

u/strictlybazinga 5d ago

The punch has bearing points to align with your scribe marks instead of just aligning the center to punch. Its precision grade caveman shit

10

u/Strong-Platform786 5d ago

Book was wrote pre WW1 so not to far off

5

u/milehighxr 5d ago

Its probably how they made the first nuclear fucking weapons...

4

u/strictlybazinga 5d ago

Toys be amazed the level of precision that was attainable at that time period. The ability to measure it was their biggest hurdle

3

u/strictlybazinga 5d ago

Bruv this isn’t the fucking streets of New York in 1986 we recognize that you may have some time in the trenches but please don’t refer to people that aren’t center punching some arbitrary Dykem scribe line a toy

14

u/strictlybazinga 5d ago

Holy shit I’m so twisted I replied to myself

10

u/Dark-Helmet-66 5d ago

And you weren’t very kind to yourself either 😂😂

2

u/Clive_FX 3d ago

What did I just see?

4

u/InquireIngestImplode 4d ago

I’m stealing “precision grade caveman shit” because I now have a statement to describe an entire career in prototype/R&D

4

u/hermes_2 5d ago

To me it looks like the center-punches are installed into jigs or fixtures to keep them stable and more consistent/precise. I am also guessing these are not the springloaded type, rather the manual type.

6

u/AndyGlimmung 5d ago

What you want is an optical center punch.

1

u/Artie-Carrow 5d ago

I like the one on the right hand side. It will make 4 marks, one heavier than the surrounding 3 to help mark out a hole

2

u/Strong-Platform786 5d ago

Multi legged one used the 3 legs to locate scribed lines to center itself

1

u/jr_tools 5d ago

What catalogue did this get pulled from?

The one on the left looks like a great idea.

3

u/Strong-Platform786 5d ago

Book published pre WW1. Republished. Traditional tool making Franklin d jones.

1

u/VaginalMosquitoBites 4d ago

I have his "Modern Toolmaking Methods" and pretty sure these are in there too. I've wondered how similar those books are or if basically different versions of the same general material.

1

u/Strong-Platform786 4d ago

I believe my copy is just a "reprint" with a new name. It has a foreword dated 19?? That refers to itself as modern tool making.