Hacks

A few unusual, unsupported tips and tricks for expanding the capability of your Egg-Bot

(Mostly just an outline here so far...)

Flipping the pen-arm chassis side wall

In normal practice, the pen motor is adjusted to its highest position-- where the shaft lies in the plane containing the "egg" axis -- when plotting on spherical objects. When plotting on elongated objects, such as eggs, the pen motor position is lowered and the distance between the motor axis and the pen is increased. This lets the pen travel in the path of a larger diameter circle, which is usually adequate for drawing on eggs and other elongated objects. But, what if you want to plot on an object that is wider (not narrower) at its equator than a sphere of the same height? In this case, you may want to raise the pen-motor position above the "egg" axis.

To do so, remove the six thumbscrews that hold the pen-motor side wall to the rest of the chassis. Remove the M3 screws that hold the pen motor in place. Re-install the motor, on the opposite side of the chassis side wall, the side with the scale markings. Then, re-install the side wall using the six thumbscrews, with the "bulge" near the motor now pointing up instead of down. Once you've made this change, you can now adjust the pen motor position as needed for round (lowest) or squat (raised) objects.

Engraving

Frickin Lasers

Enlarging the chassis

External "Pause" Button