I also found the Easy angle ruler very slow until Joe'sMom gave me the tip to cut 2 or 3 pairs of strips stacked! Cutting 2 strips (4 layers of fabric) at once did speed things up. I got fairly good results with it---each strip made about 30 triangle pairs and after sewing and pressing them my reject rate was about 3 per strip or 10%. They were pretty accurate, didn't need to trim much other than cutting off the ear. I am almost done, have about 70 more to finish tonight. This clue was more of a chore for me, but still looking forward to what's next!