[Luke Towan] has a cool HO scale Escalator mostly made of 3D printed parts, with some laser cut acrylic, for a station on his HO model railroad ... envelope of what 3D printing can do this ...

But to really get inside the designer’s head, executing a physical model, like this quarter-scale RC-controlled ... but some great design and 3D-printing tips too. [Dejan]’s modeling process ...

However, at the scale and detail level of plastic model kits, you're spending a lot of time sanding down the flat surfaces of ...

3D printing objects using metal is a well-established technique, but it tends to be too complex, expensive, or imprecise to match traditional methods at scale ... as a model for the metal-printing ...