Champion Evaporative Cooler Control Knob

thingiverse

Made this for our Champion/Essick Air Evaporative/Swamp Cooler. The original knob got stripped and would turn freely, without adjusting the actual setting. Replacement knobs costs $5 online, with 5-8$ shipping, so I just decided to just design one, and it works out well. Made mine with a tight fit, to eliminate any play, if yours doesn't probably increase or decrease by 1-2%. Just in time for summer Added an indentation for the setting indicator, and put a drop of nail polish (or paint, i just didn't have any on hand, so I stole my sister's nail polish) , to add a color, so it would be easily visible. I've been using this for about a week now, and no problems so far