From: gherold@teachspin.com   
      
   On Monday, January 29, 2018 at 8:56:13 AM UTC-5, Phil Hobbs wrote:   
   > On 01/27/2018 03:36 PM, Ian Field wrote:   
   > >    
   > >    
   > >  wrote in message    
   > > news:1c86a3ef-5b3d-400f-88b4-207556eb17e2@googlegroups.com...   
   > >> On Sunday, January 7, 2018 at 1:21:58 PM UTC-5, Ian Field wrote:   
   > >>> "Andy K"  wrote in message   
   > >>> news:ec18876d-124e-41cd-8b33-bc56195ecfdc@googlegroups.com...   
   > >>> > On Saturday, January 6, 2018 at 2:05:38 PM UTC-6, George Herold wrote:   
   > >>> >> On Saturday, January 6, 2018 at 12:37:47 AM UTC-5, Andy K wrote:   
   > >>> >> > I having been using Oatey solder paste when soldering large    
   > >>> diameter   
   > >>> >> > wires.   
   > >>> >> > I know it's designed for copper pipes.   
   > >>> >> >   
   > >>> >> >   
   > >>> >> > Is there something better?   
   > >>> >> >   
   > >>> >> > Thanks,   
   > >>> >> >           Andy   
   > >>> >>   
   > >>> >> Ughh, OK I did that when I was starting out, and promptly   
   > >>> >> was 'talked to' by an older tech.  The problem with the acid   
   > >>> >> pipe solder is you have to get it all off, with water or something,   
   > >>> >> (just like when you do copper pipe plumbing.) otherwise it corrodes   
   > >>> >> over time and your pcb/circuit turns into this ugly green thing.   
   > >>> >>   
   > >>> >> As Phil said get some rosin core solder/flux.  You can also buy   
   > >>> >> rosin flux in a little jar. (snuff box size.)  I use that for   
   > >>> >> tinning bigger wires.   
   > >>> >>   
   > >>> >> George H.   
   > >>> >   
   > >>> > Ok, that makes sense.   
   > >>> >   
   > >>> > I only used it on large gauge wires and never on circuit boards.   
   > >>>   
   > >>> Fluxite brand paste is less aggressive than plumber's flux, but its    
   > >>> grease   
   > >>> based and cant be washed off with water.   
   > >>   
   > >> Is there a type or brand that is water soluble?   
   > >    
   > > There was a water based liquid flux, all I can remember is the can was    
   > > red and beige.   
   > >    
   > > Its more aggressive, but that might not matter when you can wash it off.   
   > >    
   > > AFAIK: all PCB fluxes have to be water soluble since ozone layer    
   > > legislation banned the cleaning solvents - might be worth seeking out    
   > > which one is strong enough.   
   >    
   > Umm, no.  Leaded processes with rosin flux and solvent clean are readily    
   > available, at least over here.  I use them exclusively.   
      
   Hey you should walk on the wild side sometimes.  Water based flux is fine    
   for low impedance stuff. (~<1 Meg ohm).  It's fast and cleans up nicely.     
      
   What do you use to clean off rosin?  Or are you having someone else do it?   
      
   George H.    
   >    
   > Cheers   
   >    
   > Phil Hobbs   
   >    
   > --    
   > Dr Philip C D Hobbs   
   > Principal Consultant   
   > ElectroOptical Innovations LLC / Hobbs ElectroOptics   
   > Optics, Electro-optics, Photonics, Analog Electronics   
   > Briarcliff Manor NY 10510   
   >    
   > http://electrooptical.net   
   > http://hobbs-eo.com   
      
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