Hmm, I took a class on curved piecing and did not notice that it was hand piecing. I really thought that the class covered the basics and everything was applicable to machine piecing. I'm sure that there are additional tricks, but I really got a good foundation from this class. The triangle class should have stated it was hand piecing, but I would think that at least the basics would apply to hand or machine, although the speed piecing tricks would not have been covered.