Quote:
Originally Posted by Lil Giants
The 3mm tapp I have is likely for steel (IDK), but I have tapped many of holes in aluminum with it. What's a special purpose 3mm tapp for aluminum look like?
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Joe from what I gather , it has to do with the coating . I get at lest 3000 holes with the tin coated and the black I just make sure I oil the tap and keep it clean for every hole . the only reason I brake them , is that darn shake I get . Gets worse when I'm tired ,so I learned to do something else or go to bed
