Electronics Forum | Thu Oct 27 08:38:04 EDT 2005 | jdengler
Simply leave the paste out at the end of the shift for the next days use. Keeping the paste refrigerated just prolongs the shelf life. Even if you are at the expiration date leaving the paste out for 36 hrs won't make any difference. Jerry
Electronics Forum | Wed Nov 01 18:20:21 EST 2006 | russ
Flux is fine, make sure you have one that will withstand the extended and hotter reflow for the Lead free, your paste MFGR will most likely have the flux formula in their paste available as a tacky or paste flux Russ
Electronics Forum | Mon Mar 05 12:52:06 EST 2007 | DC
Any one have experience of MyData paste jet printing? I don't ave chance to take a look at Apex but it can reduce the paste, no stencil required and paste volume control by programming.
Electronics Forum | Thu Mar 15 09:25:32 EDT 2007 | jseagle
It will also depend on if the paste is OA (water soluble) or No-Clean. I believe you can leave No-Clean out longer because it absorbs moisture slower than OA. As always check with the paste manufacturer to see what they say. It should also be on t
Electronics Forum | Fri Mar 16 02:20:09 EDT 2007 | Wayne
Have to check with paste manufacturer. paste on the stencil should be at least 12 hours paste on the board before mounting should be at least 4 hours.
Electronics Forum | Thu Mar 27 05:49:33 EDT 2008 | ianlg
Hi If you still want to gp down the Paste Puck route then Reprint Limited has an ex Demo Paste Pucj system available available. http://www.reprintservices.co.uk/Screen_Printer_Availability_Listing.html
Electronics Forum | Wed Jun 04 07:56:36 EDT 2008 | ck_the_flip
Does anybody use a paste mixer in their shop? I am looking at one that uses "Psuedo-Planetary Motion" to mix and soften solder paste. If someone answers "yes", has this benefitted your paste consistency and improved your print repeatability?
Electronics Forum | Wed Jan 21 03:34:05 EST 2009 | mrdtech
Sorry if that sentence there was not really clear. I meant: don't to try to 'revive' old paste or paste that has been on the stencil for a very long time using fresh paste.
Electronics Forum | Tue Sep 22 10:05:00 EDT 2009 | roland_grenier
Does anyone know how to calculate solder paste volume required to run a PCBA on an SMT line? I'm looking for a solder paste volume model which include paste waste. Roland
Electronics Forum | Thu Dec 10 09:06:47 EST 2009 | stepheniii
Just how cold do you store your paste? And what are your solder paste reps like? Here they fall over each other giving support for their paste. And have you seen the problem with flux separation or have you only heard about it?
