We see a fair few PCB mills, some 3D printed, and some not. Here’s a nice one that fits in that former category. Milling PCBs is quite a good solution for the rapid prototyping of electronics.

[VK2SEB] has a better idea for prototyping PCB filters: use copper tape on blank FR4 sheets. The first, and simplest, filter demonstrated is a simple bandstop filter. This is really just a piece ...

NVIDIA details its beast quad-slot, triple-fan RTX 40 or TITAN prototype with an interesting rotated PCB as the GeForce RTX 5090 preps for launch.