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February 23, 2009
about 3 years ago
Does anyone know where to get rubber baby buggy bumpers - i.e. the little rubber covers for these things? I would like a nice button to be flush with the surface of the box for my projects, but these seem to be custom, spend $5K in tooling sort of things out there. I would think that they should be a commodity type of item!
Tutorial - Solder Paste Stenciling
about 6 years ago
Just one question - How do ya’ll arrange your parts for placement? After I have stenciled the board, I end up taking the piece of tape, opening up the number of parts that I need to place and dump them on a spot on my static mat. I then pick them up and place them one by one. I can’t just pick them out of the tape, my tweezers are too big. Any better ideas for arranging your parts to make placement easier?
Tutorial - Reflow Skillet
about 6 years ago
You keep an eye on it, and you can see as the past starts to melt and flow across the board. As soon as everything has melted, give it a few seconds, then remove the board from the skillet with the spatula. As long as you don’t jerk it around, it comes out pretty easily. I then put the next board on, and wait for it to melt and flow.
Once I have things stenciled and placed, I can do a board every five minutes using the hot plate method.
Just my two cents…
In my case, I had an approx. 2"x2" board I needed to solder. I had done some by hand, but it took a while, so I decided to try solder paste.
I usually use a professional prototype metal stencil, like from Stencils Unlimited, as it is a little more reliable than just the plastic ones from Polulu. They don’t flex or shift as easily.
For the actually soldering, I looked in the appliance graveyard and found an old hot plate, and from the cabinet, found an old skillet that had lost some of the teflon so I didn’t use it anymore. Took these out to the garage, and hooked them up.
After stenciling and placing the boards, I start up the plate with the skillet on top. I give it a minute to preheat, then using an old barbeque spatula, gently place a board on the skillet. (the skillet is not exactly flat, so the best section is just in front of the handle… ;-) )
about 8 years ago
The problem is that Avago is planning on discontinuing this line of products at some time in the future. No official announcement of end-of-life yet, but it may come as early as mid-year.
No public wish lists :(
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