How to Build a Wiremap

Step 8 Mark Your Wires

In the files you downloaded at the beginning of this instructable, go to the "data" directory. Open and print the data file that ends with the wire number you chose.

The files have the following format:

map[0] = 43;
map[1] = 15;

This means that tick 0 on the mapline has a depth of 43, and tick 1 on the mapline has a depth of 15.

Take the string that's tied to the hex nut and pull it tight to tick 0 on the mapline. Then, with a pencil, mark out where the string intersects depth level 43. Move the string to tick mark 1, and mark where the string intersects depth level 15.

You might also want to circle each of these tick marks, just so that they're more visible to you.

Once you're done with this step, you can untape the foam core from the ground (but keep them taped together). Use some clamps to clamp all three together, clamping one on each edge.

Now, use a needle scribe (or just your needles) to puncture holes into your foam core. Drop a hole anywhere there is a tick mark, and try to drop the holes as straight as possible.