DC StepUp Converter Casing

Easy to print casing for DCDC stepup boost converter. I use many of them to charge things ranging from laptop to vacuum cleaner from the car 12V. It has adjustable voltage AND current and it costs only $4 on:
https://www.aliexpress.com/item/DC-DC-boost-converter-Constant-Current-Mobile-Power-supply-250W-10A-LED-Driver-W/32634362297.html
This one has an all aluminum backplate, and is very powerful and comparatively cold. I have tried many others before.
Warning: this board can produce 250W, bu