[sdiy] [OT] LM13700 spotted in commercial product of big Manufacturer

[Mike Bryant]

I used to just solder thru hole PCBs from the top first - the solder leeches through happily enough.  It's only axial capacitors and some sockets that can't be done this way.


-----Original Message-----
From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of David G Dixon via Synth-diy
Sent: 17 May 2022 19:13
To: 'mark verbos'; 'Roman Sowa'
Cc: synth-diy at synth-diy.org
Subject: Re: [sdiy] [OT] LM13700 spotted in commercial product of big Manufacturer

Mark Verbos said:

"I'm with Roman, I think building a big through hole board belongs in one of the circles of hell. All that flipping over and having parts fall out, clipping leads, burning my fingers as I try to get the parts tight to the board, etc."

You are doing it wrong.  I never "flip the board over" -- I solder all parts that have equal height at the same time, and place them against a small piece of wood before setting the whole thing down.  It's all about order of
operations: 

1) jumper wires
2) diodes
3) resistors
4) IC sockets
5) ceramic caps
6) film caps
7) TO-92 packages
8) electrolytics

If, in that rare circumstance, I need to flip the board over before all the joints are soldered, then I simply pick up the piece of wood and invert the board into my other hand -- nothing ever falls out.

Also, if I do drop a part on the floor (a very common occurrence), then I can generally find it and pick it back up.  Not so with an SMD part -- once it hits the floor, it is in the Delta quadrant, sinking in Captain Janeway's coffee.

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