Instructable: SMT Reflow soldering using Kapton Solder Stencil

solder paste microscope

Placing an LED on some fresh solder paste

I wrote a guide on about my experiences with using cheap laser cut Kapton sheet solder stencils for solder paste stencilling, and subsequent re flow soldering with hot air. All by hand under a microscope.



For low volume production and prototyping use, the short life of these stencils is perfectly fine, and I find them fast to produce and easy to use. The results are pretty good too, but you do need quite a bit of practice to make your soldering look really professional.


Rear side shot of the prototype design showing SMT and through-hole parts for debug