Curious Inventor

I came across this site and thought it might be useful to other blacksmiths so I’m posting it.

http://store.curiousinventor.com/guides

It seems mostly to be designed for interested in electronics and electronic hardware design. There are several reference guides which are more general.

http://store.curiousinventor.com/guides/Metal_Working/Screws

http://store.curiousinventor.com/guides/drill_speed

http://store.curiousinventor.com/guides/tap_drill

http://store.curiousinventor.com/guides/Drill_Letter_and_Number_Decimal_Cross_Ref

Here is another curious site offering many innovative materials for inventors:

http://www.inventables.com/

Check them out. Nothing ventured - nothing gained.

http://www.persimmonforge.com/