On 2018-07-31 9:29 AM, Ed Minch wrote:
> I have a couple of those, both Starrett, and they seem to do a more useful job
on metal than an wood.  Even though the pressure is adjustable, it seems all it
does is make a deeper small hole
> Ed Minch

The same is true of my No.280 Moore & Wright Automatic Centre Punch. It 
leaves an excellent dimple on metal, making it easy to center a twist 
bit. But on many woods the dimple's too small  to be helpful, except for 
creating a registration mark for a beefier, hammered centre punch with a 
wider tip. The narrow tip of the automatic punch makes it easy to make a 
spot-on mark, but the hammered variety creates a larger dimple which 
makes for easier registration of a drill bit, particularly on softer woods.

My C$0.02

Don

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