When I'm trying to be fast to build, I use my butane soldering iron with the 
hot air tip and I put a high wattage tip on my soldering iron.
I hold the two of them so the hot air is preheating the next pin(s), I put the 
board in the pana vise and hold the solder with my left hand.  Like this, I can 
solder about as fast as I can push the solder in.  A 40 pin socket takes 10 
seconds.  Of course, I have all the parts already tacked in place with 2 
opposite pins soldered.  What ever you do, don't stop on a pin!  I suggest 
practicing on scrapped boards before trying it.

Cheers,
Josh


Date: Tue, 29 Jul 2014 22:24:02 -0700
From: [email protected]
To: [email protected]
Subject: [N8VEM-S100:4743] "Pin In Paste" Soldering of S-100 Connectors

I have Ant's nice 18-slot backplane here, with the striking red PCB.  I'd like 
to get it built to officially kick off my "new build" S-100 system, but I am 
having flashbacks to the 12 x 96-pin ECB backplane I made (1152 pins vs 1800) 
and thinking about how long it will take.  The pins are spaced out more than 
the DIN connectors but there are so many of them...
I am considering an alternate approach based on a technique called "pin in 
paste" used for soldering through hole components in industry, as shown in this 
video - https://www.youtube.com/watch?v=UlktpQvqxtE
The idea would be:-Using a squeegee, "load" paste into 2-3 connectors worth of 
holes until it is sticking just a little bit out the other side, like in the 
video-Insert connectors and use bolts to hold in place.  Solder paste gets push 
out on the pins like in the video.-Using a Hot Air Rework station set at the 
appropriate reflow temperature for the solder paste, go down each row of pins 
and reflow the solder into the joints.
My feeling is that using this method I would be able to complete 2-3 connectors 
in say 15 minutes and the entire board in like 1.5 hours vs many hours by 
hand.Thoughts?  Crazy idea?
Andrew B






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