Electronics > Projects, Designs, and Technical Stuff

An alternative method for soldering through-hole components

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tooki:
Many cheap components use tinned steel leads. Take a magnet to them sometime, you'll be surprised. Similarly, see how some rust...

MarkF:

--- Quote from: wasyoungonce on March 14, 2019, 09:43:26 am ---In old NASA stds (military) soldering it was preferable this way.  Fit component bend leg to lay flat on the pad/trace then cut and solder.  But the pads and traces were larger in those days allowing the leg to form a nice solder fillet.  These days boards pads and traces are in general much smaller. That said I rarely saw a PCB with components fitted like this.

 I understand what your saying about ingress of corrosion etc. Usually I conformal spray or brush coat after inspection and cleaning.  It’s be more beneficial if users spent more time inspecting their solder work post cleaning under a good eye loupe or camera.  The amount of crap joins I’ve done or found this was is incredible.

All that said I usually solder and cut enduring the cut is above the solder fillet.

Edit: if you have to remove a component that has had its legs flat on the pad/traces..... you’ll curse the day.

--- End quote ---

soldar:

--- Quote from: tooki on March 14, 2019, 07:18:41 pm ---... as soon as I read “I’ve made a video...”, I groaned and thought “Oh boy, not again”, because soldering is something where there are far, far, far too many bad videos, despite the fact that excellent ones already exist. 
--- End quote ---


There are too many bad videos and besides being bad for all sorts of reasons they are all way too long and can be reduced in length to one fifth and they would gain in quality a lot. Some people have trouble getting to the point.

wasyoungonce:
Marks video is pretty good.  He cleaned the solder (with kippex). Solder oxidises quickly and over weeks months really needs a good clean.  I use “chux cloths” ( I can wash them) with isopropyl.  Always spend quite a time in prep and cleaning....as it should.  Being self critical is good but not anal.  Reworking joins to make them perfect isn’t the best thing to do wrt PCB pads and substrate.

He did use a practice board...I still had some old military practice boards they have changed a lot. It’s always a good idea to start every job with some practice joints first .... to iron out the work flow bugs.

What ever way you do it....”clean everything” prior during and after. Then inspect.

austfox:
Wow, 11 minutes in and he’s still on the first resistor. He should be finished that board by 2021.

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