That amtech 559 is perfect! Syring will last really long… just make sure to buy authentic product, cause there are many chinese version (those also work but authentic is better)… Right now i’m using chinese 9dlls version and it works really good…
I was looking for a flux suggestion as well. I bought one from Ebay in a round shoe polish like container and it keeps drying up on me. I have watched many YouTube videos where the flux stays liquid throughout the process and mine just dries up quickly. My soldering employee has left the company and I am trying to learn the trade since I have invested about $1,000 worth of equipment.
I just purchased a syringe version from Ebay; Kester RF741 No-Clean Flux.
Did I buy the right stuff this time?
i haven’t tested Kester but if you feel comfortable using that one then that’s ok, but you should get Amtech, that’s your best option… you’ll see the difference… btw, the one you bought is paste, so it doesn’t work in the same way…