G3 Lombard issues

#31 Mon, 11 Oct 2010 - 16:26

we have a dedicated toaster oven that I call the reflow oven. / I picked it up at a yardsale for $5 bucks, so what the heck..

This is probably obvious, but I'll mention it here for future readers of this thread: once it's been used for reflow work, the oven should never be used for preparing food again. And preferably not before, either, if you can find an unused one - I don't know what the effects of vaporized bacon grease are on a PCB, but it's probably best not to find out, eh? xx(

Insert board in to oven and let the board preheat / Then take a wagner heatgun

The idea being that the board is ready at just under the reflow temperature, and the heatgun takes it up and over, right?

Pros also use a temp-controlled flat hotplate to get a board warmed up. I picked up a nice pancake maker with a flat (not curved) teflon surface, which with a bit of hacking should do the trick for that too. Amazing what you can find in the kitchen aisle }

lombard daughtercard / at roughly 475C

Wow, 475C (887F)? That's some crazy heat alright. 8-o How long did you leave it in there?

#32 Mon, 11 Oct 2010 - 19:57

Crap! Sorry, I meant F. >_< sometimes I get the markings mixed up when I only look at one set. :-x

#33 Tue, 12 Oct 2010 - 02:53

well depends on the grade of solder paste they used in the factory. Some will reflow at lower temperatures and others at higher.

all depends.

but BRAVO!! at least i added some inspiration to this thread by doing something that most people wouldnt... LETS BRING THESE MACHINES ALIVE!!!! hehe

P.S. I cleaned the oven out the best i could.

Yes i use the heat gun to bump it over the reflow point. and oven to keep it just under. I do this because i dont want to reflow EVERYTHING.. if i wanted to reflow all of it, i suppose i could use just the oven IF it can get to a high enough temp. i havent tried it. maybe i should. muaaahahahhaahahah