Oxo dish scrub brush holder

thingiverse

I love the Oxo dishwashing brush (not the latest model, which squirts the detergent, but the previous model which dribbles it, a much more appropriate quantity--the new model is OK, but you have to dilute the detergent and then refill it oftener, a pain). However, it does gradually leak enough detergent to make a mess on the kitchen counter, and I got tired of it. This stand has a drip-catching pan below the brush head, and holds the handle at an angle that minimizes the chance of detergent leaking out the rubber activating/filling button or into the brush. How I Designed This I got the brush end shape by taping the bristles out of the way and taking a photo straight-on with a long focal length. I cropped the photo and attached it to a sketch plane in Autodesk Fusion, scaled it to actual size based on the included ruler in the photo, and then chose an arc that seemed to make a nice fit. I put that arc into a small test piece that I printed first to verify that the shape was right. One try was enough! For the handle I used a profile measuring tool (a bunch of stiff wires held adjacent to one another in a slidable clip/handle). I then traced the profile onto paper and scanned it, attached it to another sketch in Fusion and fitted it with half of an ellipse. I could have used this method for the brush head too, but hadn't thought of it yet. I adjusted the horizontal brush angle so the detergent level was about equidistant from the fill/actuator plug and the hole toward the bristles, to reduce the chance of leaks. Orienting it with bristles downward should prevent most leaks from around the fill plug, unless you fill it really full. And the drip pan should handle whatever falls from the bristles. I printed it in ABS in two parts, which I sanded and scraped here and there for a nicer finish, vapor polished them in acetone vapor at room temperature for 45 minutes (to make them shiny and waterproof), let them dry for an hour, then welded them together with acetone.