Very cool quick test. Interesting as I would have thought ABS would be a be more flexible. Variation in the spool bummer. Practical tests definitly should be the 1st line of defense but my engineering background wants to know the best process settings as well. Stress and strain calculations, curve, and all that. I've seen alot of the test prints to check layer adhesion...ect but I was going to see the affect of processes directly on a small test bar printout. ASTM style.