Fingertip control for electronic knobs

thingiverse

To enhance control over my digital transmission electron microscope's X and Y stage motion, I designed a simple yet effective solution. By resizing the provided file to fit atop the existing knobs, I printed the object using ABS material on a Makerbot. The object features a fingertip indentation for easy dialing while scanning large areas. This design is particularly useful when searching for virus particles in a 1mm square area. As it's an uncommon issue with H7600 TEM knobs, I share this concept to inspire others to improve the functionality of their frequently used items through quick and easy CAD designs. Note that the partial sphere for the fingertip divot may penetrate the bottom of the knob; however, it does not affect its usability. To implement this solution, simply resize, print, and attach the object to the desired knob before using your microscope.