16-02-2014, 11:14 PM
The cells in the second photo look dirty around the seal between the positive and negative contacts. I would give them a jolly good check over before using them. You comment that they feel slippery is another indication that they might be leaky.
I would have drilled a pilot all the way through and the main hole slightly short and run a tap through the small hole at the now "blind" end for one contact with the cells and the terminal in the set.
The other end just needs a spring from a cheap battery holder fixed with one screw tapped deep into the acrylic to prevent cracking over time so that it can be rotated for battery replacement with a couple of washers to prevent it cutting into the acrylic while it is being rotated.
I would have drilled a pilot all the way through and the main hole slightly short and run a tap through the small hole at the now "blind" end for one contact with the cells and the terminal in the set.
The other end just needs a spring from a cheap battery holder fixed with one screw tapped deep into the acrylic to prevent cracking over time so that it can be rotated for battery replacement with a couple of washers to prevent it cutting into the acrylic while it is being rotated.
