AVR-Chat

--- In AVR-Chat@yahoogroups.com, Don Ingram <don@l...> wrote:
> It amazed me when I started as to how your muscles etc 'servo' to 
what 
> your eyes can see. if you have the magnification for the eyes, the 
hands 
> can do some extremely fine work. On protos I often ended up 
soldering 
> bits of kynar wire onto fine legs of IC,s to add a quick logic 
analyser 
> test socket or the like.


yes, I have done some extremely fine work with sufficient 
magnification.  The finest work I ever did was dissecting one layer 
of nerve cells from another in a retina.  I forget what 
magnification it was, but it was quite tedious.

I also found that fine motor tremor was noticeably worse if I had 
even one beer the night before.  Since I did that work on weekends 
(in college), it put a crimp in my partying.

The loupes I currently use have much less magnification, but with my 
crude soldering iron.....  it has more than enough mag.

I was considering getting a 1/64" tip for an iron, but now I think 
that something slightly wider (chisel tip shape) may be better 
for "drag soldering".

I still have not found a good reference on the technique of drag 
soldering?  I t seems as if the technique is to make a blob of 
solder and drag it across all the pads on one side of the chip.  I 
guess the solder mask prevents bridging?  I would have thought that 
all the pins would just get shorted together in one big glom of 
solder....

-Tony