I'm quite thrilled by physics, and mesmerized by roller coaster, water flumes, marble runs, die cast cars, racing sets and LEGO. I love the art behind toy design. I think it started with the original Creepy Crawler sets from Mattel back in the 60's. It featured that wondreful, child-unsafe Thingmaker which gave us that memorable jolt when you accidently touched it. Let's see..an exposed electric oven. for kids. What were they thinking?. I any case, the battles scars were worth it. LEGO came later - but I was too busy being an adult. Eventually, I came to my senses. So let's see -- papercraft is great, Polymer..even better, but 3D Printing is quite the ultimate. Well, with the exception of spiteful build plates. Looks like I came full circle, but now, my steel molds from the 60's are 3DS Max creations that have come to life. I also know better than to touch an extruder nozzle.