I tweeted this question, and got some answers:
905 Christian St.
944 S. Ninth St.
1218 Mifflin St.
1214 Ritner St.
Another Tweeter mentioned Whole Foods in Plymouth Meeting cuts their own pasta, too.
I’ll update more places as I get ’em, or here’s a Google search for fresh pasta in Philadelphia. Comments welcome, too!
The Doyenne of Dining in Philadelphia and South Jersey.