Retired from the United States Army in 1981. Worked as a commercial radio repair technician from 1981 to 1985, then as a Journeyman Electrician until I got my Master Electrician's license a year later. Retired completely at age 62 (77 this April). Amateur Radio operator since 1963, current callsign W0EB, and got into 3D printing when my wife bought me a Snapmaker 3-in-1 for my 77th birthday. It only has a 4.9 cube print volume so I bought a second printer (Ender 3) to be able to make larger items.
Since I got the Ender at the end of April (2019), I've made tremendous progress in the 3D printing hobby and, thanks to a good friend of mine, I've learned enough about Autodesk's Fusion 360 (free to hobbyists and startup businesses) to design some of my own projects with varying success. The failures taught me enough to make them into successes for the most part and I've even been able to give back to the Thingiverse community with some cute things to make.
I subscribe to several 3D printer groups on Facebook, but I've found they are sort of like most of the LINUX groups. If you aren't already an expert, don't bother posting anything as their "Know-It-All" people make fun of you and won't even answer legitimate questions, thinking you should have been into this for years other than days and should already know the answers to those. Thankfully I've seen none of that on Thingiverse and everyone I've asked about their projects have been kind enough to provide answers to my questions.
I just went through all the adjustments and calibration points on my printer this morning and have it purring along very quietly in the background. (Enders are supposed to be very noisy, mine is not and I don't have any dampers on any of the steppers.)
Tools I Use…
Printers: Ender 3
Design Programs: Fusion 360
3D Design Skill Level