Electric Bubble Maker

thingiverse

A 7 inch diameter circular bubble maker. Uses a standard blower fan and a mini servo for rotation. A battery compartment houses a 3 cell lipo battery that supplies power to blower fan, and also a BEC from RC hobby for converting the 3 cell voltage to 5/6v for the servo. Blower fan has direct connection to the 12.4v lipo battery. A round toggle switch was drilled and mounted onto the backplate to complete the circuit for the battery connection. The servo does need modification to gearing by clipping the Endstop which prevents 360 rotation. If your Servo is smart and doesn’t turn when it doesn’t detect any signal. Just connect the 5/6 volts power directly to the motor. For the wheel, I used a layer of double sided foam tape secured by a thin rubberband, followed by a second layer of double sided tape over the first one. Once the wheel gets wet the adhesive on the exposed side no longer works but the cushion effect and friction was good enough to turn the wheel. The bubble wheel is mounted using a threaded bolt with washers and a 5mm ID, 10mm OD, by 4mm bearing. The bolt does not need to rotate and can use a nylon lock nut to affix it into position. Uses quite a bit of material, but as the bubble wheel is quite fragile, I had to improvise a guard around the top in case of drops and tumbles. The Front section and back section are secure with two wood screws thru the front, and bottom ( need to drill holes). The bottom legs are also mounted by drilling holes and securing to the main body as desired. Printer settings: 1.2mm walls/shell top and bottom. 0.4mm nozzle PLA 200/60 15% infill, no support on any of the parts. Orientate STL file as required. STL files provided are the original version, I will make updates to it if requested. Original files are free and available for download here: https://cad.onshape.com/documents/05b6a423146151d8055e0032/w/a8690604f8a2b62c98952ff5/e/0163b6273836e739b2820466 EDIT October 29 2017: Waiting for Blower fan in the mail. Snail mail..