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I have not had tombstoning at all ( over several thousands of resistors). My oven preheats the board a bit ( around 100 deg ), although I would have to check how it really works as galden is not activated in that temperature. I will place probe on the board next time. Professional Galden based ovens...

Nice one.

I loose most of Galden when draining the oven - that is why I plan make gas tight cover, so it can be left there.
I think some is lost also on boards - especially in my case when I have to cool down whole system ( before taking out the board ).

Nice collection of Lee Child's books

Could you show pictures ?

Do you loose much of Galden during soldering ?
Do you keep it in vapor phase all the time and just put boards one after another ?

Well, I use galden and the bigger oven from http://imdes.de/ I like it very much, but you have to be aware of few things: 1) The quality of is very good ( even with big inductors which I had to solder manually before), but the process is much slower. Takes about twice the time of my previous oven ( ...

Ok, I have tested the new paste - result are excellent. I would say exactly as on their pictures showing paste application. No detectable flow :-) One more adjustment on stencil ( a bit too narrow hole for ethernet phy pads) and it will be perfect. An combined with Vapor Phase Reflow oven - no short...

Small video for a simple machine ( I did own that type )

https://www.youtube.com/watch?v=3kkf6bktIHA

I think the principle is similar to what you suggest

Ok, after all I got much better deal for Loctite GC 10 T4 in Digikey

Anybody interested in half of the jar ( 250g ) ? I can pack and ship easilly ( and cheaply) around Europe

Ok, I will try then this Multicore 96SC LF318 - we do have a fridge, so hopefully it will live longer. http://pl.farnell.com/multicore-loctite/698840/solder-paste-95-5-3-8-0-7-500g/dp/1257149 http://www.farnell.com/datasheets/1683984.pdf?_ga=1.175423787.888910923.1434007618 I will split the original...

Thanks a lot. I will try to use compressed air on stencil and dry it more then usuall.

Any idea where to buy these solder pastes in smaller quantities then 500/600g ? I do not use that much in reasonable time

Question - how do you prepare the paste ? In about 60% of cases, after removing stencil the paste flows a bit and in case of fine pitch it causes later on shorts. I would like to get get to a point in which the paste does not flow once placed on the PCB. I have tried to leave it for hours in room te...