Customiser: Flashlight battery spacer ("rattle stifler")

thingiverse

Human: Aren't you sick of battery adapters for LED flashlights that don't fit right, leaving batteries to move around freely in the housing? This can cause LEDs to flicker or change mode even when subjected to slight acceleration. Dual supply torches with (n x 18650) or (n x 3xAAA) seem to suffer from poorly dimensioned adapters consistently. Even a nice 26650 zoom flashlight that can use one or two cells purchased during a discount on BangGood(http://www.banggood.com/MECO-XM-L-T6-3600LM-Zoomable-LED-Flashlight-2x18650-p-982567.html, was around $7 for this huge bugger then) has AAA adapters that are off measure. I repurposed them immediately since I'm using the flashlight with 18650 cells. Spacers for conversion to 18650 cells were provided but they're completely off. Time for replacement. As the problem with those adapters is a recurring issue, a solution should address it. Therefore, a customiser has come up with the rattle stifler. Preset settings are for the flashlight shown above: Two spacers, each cell sized, to accommodate use with either one or two cells. One spacer is turned such that the rim points towards the contact spring, and the rim of the other spacer goes towards the rear cap switch. The inner diameter fits Panasonic NCR18650A cells spot-on. Post-Printing Problems, shortcomings known problems fixed in v0.03 Version history Battery spacer, http://www.thingiverse.com/thing:1801936 v0.01 2016oct01, ls (http://www.thingiverse.com/Bushmills): initial version v0.02 2016oct01, ls added twist, some factoring. v0.03 2016oct02, ls fixed fin positions on jacket, made thickness of base with rim customisable v0.04 2016oct02, ls fin position calculation compacted and simplified v0.05 2016oct03, ls simplified punching intersected parts (dropped "difference()") How I Designed This This was a job that put an emphasis on using these tools: caliper text editor cup of coffee