Magazine Battery AAA holder

thingiverse

This is a deep redesign of the wonderful design Magazine Battery holder (AAA) by Jallim (https://www.thingiverse.com/thing:5437849) The biggest problem with the original design is the degradation of the spring, which doesn't work properly for more than 1-2 weeks. I experimented with different spring designs for a long time and, it seems to me, I found the right one. In any case, the store, completely filled with 10 batteries, stood with this spring for more than three months and did not lose its working capacity. The main idea of ​​this spring is to make the plastic in it work not for breaking, but for twisting - for this, the spring consists of two independent springs connected to each other only in places of twisting. Its device can be seen in the figure. I printed the spring from PETg. A printable area of ​​at least 230 mm on the long side is required. The model is made for a nozzle of 0.4 and a wall thickness of 0.4. A spring printed with different parameters will most likely work much worse. What has been changed from the original design: 1 - The spring has been radically redesigned 2 - cuts are made in the case - the rest of the batteries in the store are visible through them. The length of the slots limits the loading of the magazine to ten batteries. 3 - The case is enlarged so that the spring does not fully compress when the magazine is fully loaded - this can break it. 4 - the length of the slots has been changed in order to ensure a secure fixation of the last battery in the magazine 5 - one more slot has been added in the body for reliable fixation of the bottom.