While there are a variety of patterns in this book, it claims the patterns are conveniently sized and ready for use. The patterns ar a little too small to use directly from the book. They need to be taken to a printer and enlarged slightly unless you want to be cutting pieces of glass so tiny they will be impossible to hold onto when assembling the project or grinding them. This is not to say all of the patterns are this way. Some of them are fine, but most are not.