I wouldn't have a clue lol it tuck me 5 months of working through, some days I dodn't go near it and then others I was obsessed but also as I don't sleep a much at all I spent many nights on it too to keep my brain occupied.

It started when I saw a pic of it on Facebook, a good 18 months ago, I bought the instructions srraight away but was intimidated by them and once I'd got more experianced buildong Technic sets I was ready to have a go.

It's defo great for when you have nothing else to do as it keeps your brain ticking over.