It’s Manufacturing Monday at Adafruit! This is our stencil machine in action.
The stencils we use to make our products require careful maintenance. We clean our stencils thoroughly with isopropyl alcohol, essential to keeping the tiny apertures open and allow solder paste to flow through. One of the best parts of operating the stencil machine is watching it knead the solder paste back and forth, transferring the paste onto the printed circuit boards below.