Over 50 years of age and weâre still playing with Silly Putty! October 18, 2019 No Comments Machining Process Seriously, Silly Putty? In a way, it is true, but this is our kind of âSilly Puttyâ. Here at Extrude Hone we call it Media and in fact Abrasive Flow Machining Media. (more…) Lire plus