Electronics Forum | Thu Sep 11 10:18:15 EDT 2008 | gregoryyork
Sorry all I know is that storing the paste Tip down the flux will run to the tip of the cartridge so will be runny initially then dry up as you use the cartridge. Unless the Rheopump mixes it before application
Electronics Forum | Thu Sep 11 10:25:51 EDT 2008 | rarnold
Flux is less dense than metal so it 'floats' to the back NOT the tip when the tubes are stored tip down.
Electronics Forum | Thu Sep 11 11:11:31 EDT 2008 | gregoryyork
Yes sorry you are right so you have answered your own question anyway. Dry to start runny at the end
Electronics Forum | Thu Sep 11 12:38:45 EDT 2008 | vladig
I'm curious how many knobs have left to be turn? :-) Isn't time an issue in a production environment? Vlad
Electronics Forum | Tue Sep 09 19:51:59 EDT 2008 | vladig
May be you right, but I spend a lot of time on Technet (a similar site maintained by IPC) and people who posted questions usually come back saying whether the problem has been solved, as someone else may face a similar problem down the road. I think
Electronics Forum | Wed Sep 10 15:28:36 EDT 2008 | slthomas
"I 100% agree that quality engineers can and do solve a lot of problems on the spot." *cough* *snicker* Or did you mean "engineers of high quality"? By and large, the QE's that I've worked with only found, identified, highlighted, or conjured u
Electronics Forum | Wed Sep 10 15:35:21 EDT 2008 | gregoryyork
Do those Balls pass IPC LOL Looks like the paste has been stored incorrectly probably stored stood upright and the flux medium has 'moved' so you have very rich flux areas and getting slumping due to it. Paste in cartridges should be stored flat refr
Electronics Forum | Thu Sep 11 10:51:56 EDT 2008 | slthomas
ISSG, I didn't see you mention anything with respect to profiling. Should we assume that you've already ruled out any thermal issues? Based on the proximity of your problems to a big honkin' connector that's where I'd have looked first. But then a
Electronics Forum | Wed Sep 10 10:04:52 EDT 2008 | vladig
And I bet you are not alone :-). All I'm trying to say is that there are problems which can be fixed by knob turning, but there are also others which can not. So, the appropriate analysis should be done to find the root cause and fix them. In the re
Electronics Forum | Wed Sep 10 10:49:23 EDT 2008 | slthomas
You missed my point. People often don't find the need to post their problems here to begin with because "knob turning" solved them *before* they needed to lean on the collective experience of SMTnet, Technet, or what-have-you. Your posts seem to b
