[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. Escalators are mesmerizing to watch – there’s ...

Sometimes the best way to figure out how something works is to ... but some great design and 3D-printing tips too. [Dejan]’s modeling process started with the 3D renderings of Perseverance ...