In this post I’m sharing detailed instructions for the most difficult part when building the plotter: adding the dental floss wires. You’ll learn how to fasten the threads securely and make them wind well, without blocking the mechanism.
I think I learned this technique while building one of my very first LEGO Technic sets, the 8050 universal motor set. It was an awesome set back then and maybe it awakened my love for walking robots and remote controlled vehicles. Isn’t it mazing how long the stuff you’ve learned with LEGO sticks?
This guide is a companion guide to my building and programming instructions for the vertical plotter that I posted earlier.
Step 1 – Remove the pen holders
In the first step we make sure to have access to the inside of the vertical plotter by removing the pen holders.
Step 2 -Guide the wire
Next we can guide the wire along and around all spindles and axles.
Step 3 – Put the wire through the sides of the bush
Step 4 – Add yellow bushes
Step 5 – Push the grey axle back
Step 6 – Tighten
Step 7 – Wind the wire
Step 8 – Make the loop knot
In the video below you can see the whole process for one motor from start to end.