Buck Converter case (LM2596 DC to DC 2020 Rail Ender 3)

thingiverse

I wanted to add a DC to DC converter to my Ender 3 to power a 12 volt fan. I tried another LM2596 Buck Converter case, but the dimensions were slightly different. So, I designed my own case. This case comes in two parts, and you will need two M3 bolts that are about 16 mm long. The Base: Choose either a plain base or the base that slides onto the 2020 rail. The plain base is called <i>Base.stl</i>, while the base with the rail is called <i>Base w Rail.stl</i>. The Top: Choose either the top with one larger hole at each end, which is called <i>Top 2hole.stl</i>, or the top with two smaller holes at each end, which is called <i>Top 4hole.stl</i>. The top fits on only one way because the adjustment pot fits in the access cutout. The voltage IN and OUT are marked, along with the polarity. <b>Note: Not all LM2596 boards have the same dimensions. I only tested with one style. I included photos from Amazon.ca, which I bought. I cannot guarantee that your LM2596 will be the same dimensions.</b> Also, make sure to rotate the models so that the grill is down and no supports are needed.