With over 4,000 pieces, bluetooth remote control, and seven electric motors, LEGO’s enormous (and enormously expensive) Technic 42100 Liebherr R 9800 Excavator set is the largest yet produced by the company. If you’re going to make a ‘B-Model’, using just the parts from one official LEGO set, it may as well be from the biggest!

Previous bloggee and Technic genius Grohl has done just that, with his amazing 42100 snow groomer B-Model. With seven motorised functions including remote control drive and skid-steering, an elevating front blade, lowering groomy-thigumy on the back, plus a crane and winch, Grohl’s 42100 alternate is as functions-packed as the set from which it’s been built.

Grohl promises instructions are on the way if you fancy turning your own Liebherr excavator into a snow groomer yourself, and until then you can check out the build on Flickr via the link above.

We’re also looking for you to build your own B-Models from existing LEGO sets (whether that be from the enormous 42100 Liebherr R 9800 or the smallest City set) in TLCB’s Lock-Down B-Model Competition. You could even win yourself some brilliant bluetooth remote control prizes to bring your Lego creations to life! Check out the competition details by clicking here and get B-Modelling!