I screwed up soldering in a row of headers and I need to redo it, and there is no way I know of to move the entire row without preheating it. Luckily I now have a digital hot plate which is fairly new and I am still figuring out what optimal temperatures are for things.. It heats things up on a block of aluminum.
(Edit: After a examination of the actual distance the row needs to move, I think Tomorokoshi. is almost certainly right, de-soldering the row with braid will probably be possible. So I'm going to try to remove and re-solder the off alignment row now (see pic below with wire-wrap template for reference to how much it was off, maybe 1.5 to 2 mm, not so much.)
With any luck I should be able to redo it that way. Read down a few messages for a good tip from Ian M. to prevent this from happening again in the future.
Preheating would likely be a mistake.
----original post: no longer the battle plan at all----
reason: too complicated, unlikely to work...
Unfortunately plastic I am sure melts at a lower temperature than (leaded) solder and I have no idea what that temperature is.
I just hate the smell of burning plastic..
What is a safe temperature where the header plastic won't melt, so that then I can bring the solder up the rest of the way with my soldering iron and move the headers so they are at the right 90 degree angle quickly, before they melt from the soldering iron's heat?
Headers are just the usual breakaway type.. these are yellow and came with (and are on) a presumably mostly ROHS STM32 board.
There are a hell of a lot of pins I am going to need to heat up, all at pretty close to the same time.
So far Ive been using it at 95 degrees C. Nothing has fallen off or melted at that temperature, so far.
I guess thats where I will start with this.