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one off custom parts for DIY projects

small build size, and unrealistic resolution at 50um

enclosed and heated chambers of large size <cubic foot, and powder bed

aluminum and SiN

glow in the dark, and color change sensitivity temp and uv

Dr Manhattan

https://learn.adafruit.com/diy-3d-printing-filament

mareial to reduce anisotropy of printed parts (FFF) by alowing layer to layer cross linking

makeing parts for DIY projects, and addon's for hardware to improve functionality

designing parts with "build for printing" ideas in mind.

3D Printed Lighted Globe Uses Stereographic Projection to Cast Incredible Patterns http://3dprint.com/30368/stereographic-lampshade/

i would use it for building models

filament with the ability to cross-link between layer to improve strength and reduce anisotropy of prints

1) What is the most interesting thing you have seen done with a 3D printer or 3D printing technology?
Powder bed SLS/EBM that can produce parts with near theoretical density and egn properties, and...

i would be very interested in testing i've been a backyard observer for many years ever since HS astronomy club, this project looks very promising especially at primary and secondary education levels...