Z axis expansion of the board material is a lot higher than x and y. Hand
soldering heats the terminal but not the board (so much). Wave solder
preheat really heats the board. This might cause measles because the swaged
component puts the laminate under pressure. It might be different this time
because of a number of variables, hole clearance, board thickness, swage
pressure, swage speed, moisture content of the laminate . . . .

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Bloomquist, Ken
Sent: Thursday, June 16, 2005 3:17 PM
To: [log in to unmask]
Subject: Re: [TN] Measling Conundrum


Hi Steve and Ramon,

I'll answer Ramon's question first;
"Is this the first time that you run this board through the wave?"
No, we've run them before and had much better results. We will give
baking them a try.

Steve, they are not pressed in hard at all. They are in hard enough to
keep the perpendicular through the wave process but you can still turn
them with your fingers after they are swaged.

The holes are actually quite large, .191".

KennyB

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