Unifying quantum mechanics and general relativity, String Theory proposes that the universe is composed of vibrating one-dimensional strings instead of points, incorporating all particles and forces into a single framework. Alternatively it’s adding some string to a LEGO set to make a new one. We’re doing the latter today…

This is paave’s Technic mobile crane, and it’s built only from the parts of the 42175 LEGO Technic Volvo FMX Truck & EC230 Electric Excavator set. Plus a piece of string.

Featuring working steering, outriggers, boom elevation and extension, superstructure rotation, and an inline-6 engine, paave’s alternate is an excellent reconstitution of the 42175 donor, and one you can build for yourself as instructions are available. As long as you have some string. Find a link to them and further build details on Eurobricks via the link above.

YouTube Video