anyone used these ?

Joined
Feb 7, 2008
Messages
2,712
Location
Nottinghamshire England
Hi all

These look like a good idea ? Combines drill/tap

I wonder whether running the tap in at that speed is a good idea ?





Always suspicious of anything gold coloured from China !

Paul
 
Joined
Jan 16, 2011
Messages
323
Location
Vilvoorde / Flanders / Belgium
I have seen more of those Drill/tap combos, but in most cases it's ment for automatic machining like on dedicated tapping machines or CNC mills. In many cases carbide tools. Not suitable for hand machines.

And the ones we see here are cleary suited for handmachines. The coloring does remind me on oxydized titanium. I guess HSS tooling with a plasma coating of TiN without the gold-polish we see on the cheapy kids toys.
 
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