SMD Solder Mask Stencil


#1

Has anyone made an SMD solder mask stencil with a Glowforge - and if you have, do you have any suggestions for methods or materials. My PCBs are designed in Eagle.


#2

How thick/thin are your traces? Othermill has some good guidelines to design traces wide enough for small bits, but they are still far larger than most SMD components need…

I was thinking that if I were to try with othermill-sized traces, I would try to find acetate sheets so they mimic the thin stamped sheet metal I’ve used before, but then look for other extremely thin miscellaneous stock plastics to aim for metering the right volume of solder… Sorry somewhat inconclusive for you, but depending on acetate’s laserability-without-death, it could be a good starting point!


#3

Adafruit demonstrates a process using kapton tape. They even account for kerf.


#4

Sheet mylar is good for this kind of application.
It cuts well and holds up to repeated use.


#5

Many thanks - I plan to try 4mm mylar - Pololu offer a service making them in this material. The boards are designed for milling (I have a Carbide 3D Nomad).


#6

Many thanks - A brilliant tutorial.