Hello there,
today I present you the K'nex Jigsaw Lift, please keep in mind that bezempje95 originally invented it, but as he deleted his account/ibles/all his stuff I present you my version of it, with instructions.
This one also features a counterweight, making the lift run a tad more smoothley.

Just follow along the pictures and be sure to read the image notes!

I hope you enjoy it!

Oh, don't forget to check out my website for more awesome stuff!