chisel punch gage.

[K-Dog]

Seriously I dont know what it is for or how to use it or why to use it.

Any one know ?

 

[Buckgnarly]

60 is the tip for the chisel, the other go no-go is for mushroomed hitting ends. At least how I understand.

 

[logikal]

^^^^Dead on.....

Or I could be wrong too.

 

[jmm]

I thought they were for dressing your punches and chisels. The gauge allows you to replicate the profile of the striking end and angle of the chisel end.

 

[ken w.]

That item was the only thing in the Snap On price book that was no charge.

 

[2oolhound]

It's $1.51.

Quote "The anvil end on heads of Snap-on® punches and chisels are machined to a modified parabolic curve. This design directs the striking force to the centre of the tool head to allow slow metal displacement. The parabolic curve controls mushrooming to reduce chipping and splitting. Heads should be re-dressed to their original shape with hand files as necessary. The tough steel alloy is machined and differentially heat treated for optimum performance. The hardness of the striking head is reduced to help toughness and add qualities that result in a slower mushrooming of the striking surface."

I don't think there is any significance to the hole.

 

[justme-]

Actually the holes are sinificant. The small one at the bottom of the V is to keep the angle from cracking (stress cracking) while the big one is to let you chain it to your grinder bench so no one walks away with the least expensive item Snap on has even manufactured

 

[Cope]

I have one, but I was taught years ago to use a 25° bevel on chisels, and this one puts a 30°.

 

[CutterFarms]

I'd like to see some pics bcz mine doesn't line up with the striking head on a brand new set. The 60* seems legit for the chisels.