Hello again 
Have a nice Sunday.
I have made my EMAG DOE today. With 2 different Fluxes. With a cheap chineese (I run out of my Chipquik and the Amtech has not arrived yet) and with a MGchemicals Rosin Flux. Test have been done with 10% and 5% solution and from the 5% version there is one with and without heating on the 3D printer.
The cleaning effect was amazing with both concentration but as You can see on the pictures the 10% version again caused quite severe etching/discolouration. At some point between the LED pads it even removed the white solder mask.
The 5% versions look way more shiny but still some slight discolouration can be seen.
As a result later on I will try to use 2,5% version (I was too lazy to test also this at the moment Sorry for that)
What is your opinion?
I hope you find it helpful.
