After my tugboat model project I began to produce more practical parts. I made covers for my electronics, a cable holder, a and switch lock plate.

At a CCPaSEC board meeting, a new dissolved oxygen meter was demonstrated. One of the drawbacks was that the probe was unprotected while in use. I volunteered that I had a 3-D printer and that I would like to try making a protective cover.

I started with a simple design (the prototype on the left). The posts were too small which caused the rough filament dispersal at the top of the object. The second prototype was better. However, the circular holes were too large which resulted in a weak structure. Also, the inside diameter was too tight to attach to the probe. The final design on the right has smaller circular holes, giving the cover strength. I widened the diameter of the inside diameter 2 mm from the bottom to the top. That resulted in a snug fit.

The final prototype was made with orange filament for visibility if dropped.