I'm not saying you have to be a math wizard to be a good patternmaker, but it definitely helps to have the kind of mind that can solve visual problems. Exhibit A: here's what my patternmaking textbook (The Art and Science of Patternmaking and Grading by Professor Harry Greenberg & Professor Leonard Trattner ) indicates needs to be done to create a proper raglan sleeve pattern:
Doing so creates the necessary ease under the arm, so you can do things like scratch your nose and wave to your friends. Now here's what that looked like in real life on my living room floor the other night:
Of course, then I taped it all down to a large piece of paper and used my curves and rulers to draw all around the now-cut-up sleeve pattern. Then I double-checked and fiddled until all the seams were the right lengths.
The end result? Pretty perfect really!
Now the back view:
I wanted to check welt placement (and let's face it, who couldn't use a little practice making welt pockets?), so I cut and sewed just one:
There you have it, kids: Math=a good fit! Now I just need to choose my lining fabric and I'm all set to sew a bomber jacket from my own pattern. Anyone have a fave welt pocket tutorial they want to share? Throw it down in the comments below.