Electronics Forum | Wed Apr 03 19:03:31 EDT 2013 | hegemon
In agreement, in that you should have already printed enough paste on the board to accomodate the joint. Adding paste would give the result you described. (too much solder) Adding a little flux (only) and heat would be the correct path out of that s
Electronics Forum | Wed Apr 03 04:08:20 EDT 2013 | ericrr
Yes well, now we used to add a bit of flux to our leaded paste to make it slightly runny, But when we went to unleaded paste the joker who came in from another company to set the temperature on the oven said "you dont add anything to unleaded paste!.
Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef
Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c
Electronics Forum | Mon Mar 25 21:45:22 EDT 2024 | buckeye
I got an inquiry from one of our electronics labs with regards to their soldering processes. They use eutectic (63% Sn, 37% Pb) solder. For liquid flux they are currently using Kester 186, which is an old-school, full rosin (RMA and ROL1) flux that c
Electronics Forum | Wed Oct 07 15:46:36 EDT 2020 | tamasmagyar
Hi Hearse, I currently use a MY600, with a AG Ejector which can place dots between 0.33 and 0.52 mm. The differences for a MY600 with placing small dots is down to ejector and paste. To be able to place dots as small as 0.25 mm, you would need an
Electronics Forum | Wed Jan 30 15:10:09 EST 2013 | hegemon
Restoration of the fluxing properties? Can't see adding a liquid flux to a solder paste (assumed expired shelf life) in order to "restore" anything. If the volatiles in the original paste are gone, then adding more carriers and volatiles will not pr
Electronics Forum | Tue Feb 22 12:42:53 EST 2005 | griinder
I was curious if anyone else has ever added water soluble flux to water soluble solder paste that is only a few days old, but is too dry to use in production. Also, are there any known bad side effects to this process. I have already searched the arc
Electronics Forum | Wed Jan 30 17:23:07 EST 2013 | dyoungquist
In response to hegemon... This is not a recommended practice but..... We have added a few drops of water soluble flux to our water soluble solder paste when the paste is on the stencil. This was after the paste had "dried" out a bit. We have had
Electronics Forum | Tue Jul 19 09:18:14 EDT 2011 | davef
Could this be an opportunity to explore the use of cartridge-type paste dispensers? Or maybe a reason to keep working over the weekend. * Re-Storing & Re-Using “Used” Solder Paste. Though not a recommended practice, used solder paste from the stenci
Electronics Forum | Wed Feb 23 17:24:06 EST 2005 | Austinj
Solder spattering, solder balls, components "popping" off pads........ Not a serious chemical reaction, however, as replied to by KEN on 12/21/04 in a similar article: "Are you adding liquid flux? Or paste "Gel" flux? If liquid flux: This, in my m
