Pretty good but some additional info here on drill clearance holes. (If it posts OK?) As a rule of thumb if the base metal is as thick as or thicker than the tap diameter you can drill a larger hole easing pressure on you tap and reducing the likelihood of tap breakage. This chart from my shop teacher gives a few drill diameters with accompanying percentage of clearance. It's a little fuzzy can you enlarge it any other than hold down ctrl and scroll it bigger with your mouse wheel ??
~Chris
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.