Video Presentation

How it works

The spider is mounted on a linkage mechanism with two springs. These springs are built in a way to be lock on the downer position, but start to push as soon as the system is triggered. The trigger is made with a rotating lever connected to the crank which pushes the parallelogram. The openable top part of the box is also spring loaded to help to open it and keep in open position. You have to make several rotation of the crankshaft in the way you can not know when the spider will jump.

It is a perfect build for LEGO fan or children for Halloween. If someone comes to your house to ask for candy, ask him to just turn the crank of this box before…

You can read the full review of this model on my blog.

How to build ?

If you have already the parts : you can purchase the PDF instructions only on this page and build it with your LEGO parts. The instruction contains the partlist at the end, and you can check individually on Rebrickable, or in the instructions previews below.

If you do not have the parts, you can purchase the complete kit from two different retailers :

• Using Genuine LEGO Parts : This model is available on Buildamoc in a complete package including genuine LEGO parts plus the PDF instructions.
• Using non-Genuine LEGO Parts : This model is available on LesDiy Store in a complete package, including the parts (alternative bricks from China) and the PDF Instructions.

About this product

Instructions preview