The latest lab power supply that I made. All parts are from Aliexpress:

1. 230V mains supply 36V 7A Plus https://www.aliexpress.com/item/1005003394055957.html?spm=a2g0o.order_list.order_list_main.90.5ece18020mD4sf
2. DC/DC converter https://www.aliexpress.com/item/1005005282052540.html?spm=a2g0o.productlist.main.1.2590uWOguWOg55&algo_pvid=e1712f42-0170-4c97-a4f7-6c5d4226bd4a&utparam-url=scene%3Asearch%7Cquery_from%3A
3. Voltage and Current measurement https://www.aliexpress.com/item/1005005631411872.html?spm=a2g0o.order_list.order_list_main.95.5ece18020mD4sf
4. Terminal https://www.aliexpress.com/item/32872164977.html?spm=a2g0o.order_list.order_list_main.85.5ece18020mD4sf
5. On/Off switch https://www.aliexpress.com/item/1005005560550545.html?spm=a2g0o.productlist.main.3.4d9f160z160zbV&algo_pvid=831f027b-5b97-4b70-a916-9836f0ccad1a&utparam-url=scene%3Asearch%7Cquery_from%3A

Printed with Ender 3, 0.2 layer height, with no supports, 25% infill, and PLA material.