0

Applying solder paste by hand


Kevin writes

While the normal way of applying solder paste to your boards is with a metal stencil (or perhaps a cheaper plastic stencil for one off prototypes), if your board only has a couple dozen components or you are pressed for time, it may end up being more time consuming than it’s worth to have a real stencil made. Thankfully, solder paste stencils aren’t the only feasible way to accurately apply solder paste to you board. With only a few inexpensive pieces of equipment (and a bit of patience) you can just as easily apply the solder paste by hand


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

Join 14,000+ makers on Adafruit’s Discord channels and be part of the community! http://adafru.it/discord

CircuitPython 2019!

Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7:30pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.

Join us every Wednesday night at 8pm ET for Ask an Engineer!

Follow Adafruit on Instagram for top secret new products, behinds the scenes and more https://www.instagram.com/adafruit/


Maker Business — A list of companies owned by Amazon. It’s big.

Wearables — Raid the kitchen

Electronics — Capacitor ESR

Biohacking — Vitamin-C + Gelatin for Accelerated Recovery

Python for Microcontrollers — Python snakes its way to the STM32, Serpente, and more!

Adafruit IoT Monthly — Adafruit IO Updates, RGB Stream Deck Message Panel, and more

Microsoft MakeCode — Welcome to the MakeCode Newsletter!

Get the only spam-free daily newsletter about wearables, running a "maker business", electronic tips and more! Subscribe at AdafruitDaily.com !



6 Comments

  1. I’ve done dozens of boards this way. For really fine pitch components, you can run a thin bead of solder along the area for the pins, and the surface tension will bead the solder up around the pins (see this article). Of course, plan on having solder wick handy to mop up the inevitable bridges…

  2. Limor, can you comment on which tools and paste you are using? Trying to track down a good syringe for applying paste…

  3. harvest, did you read the article? 😉

  4. J. Peterson:

    Ya … you just need to lay down one long continuous line of paste across the middle of the pads on 0.5mm parts like QFP. You sometimes get bridges (though that’s the case even with stencils) but they’re easy to clean up, and I still find it preferable to hand-soldering certain parts since you need a 350-400

  5. Hmmm … my comment got cut in half. Moral of the story: I added a video to the page on removing bridges on QFP parts as well if it helps anyone.

  6. Zephyrtronics http://zeph.com/ has everything for SMD rework and you can get both normal and power plungers for their syringes.

    The specific page for this stuff is here:
    http://www.zeph.com/chem_direct.htm

Sorry, the comment form is closed at this time.