Hello,
last week I needed a Supply for a 12V sodering iron for outside use. My idea was to use the battery of my Handdrill for that reason. So I designed an adapter for the battery of my 12V Stahlwerk hand drill. I used glass fiber reinforced polyester for the base, where I needed 3 parts and a pease of PVC for the switch. Here ar the fotos of the assembled parts.

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Battery attached to drill Motor connectet to Adapter attached to battery from drill
adapter Motor off Motor runs

My sister was so impressed that she immediately wanted the adapter with LED light, which is why i had to use the small motor for the demonstration.

I wish you all a Merry X-mass an a Happy New Year
Stay healthy

Guenter