Electronics Forum | Mon Nov 11 20:26:37 EST 2019 | kylehunter
Alrighty... Problem solved - ended up not being a problem at all. So, what I didn't realize, was that the knead pressure was 5kg, and the first print was always kneaded, so that's why the set pressure showed 5kg. After it was done kneading, the set
Electronics Forum | Mon Nov 11 21:19:06 EST 2019 | dekhead
Knead pressure, is normally at or slightly lower (maybe 25%) than print pressure...
Electronics Forum | Mon Mar 18 20:49:46 EST 2002 | djarvis
We leave the next days quantity out overnight. Never had to do more than 4 kneads. On the inline we don't do any and the VMP 100s we only do one. Only seem to require kneading on the old clam shell printers - don't know why! That's with Indium SMQ 92
Electronics Forum | Thu Jul 22 15:18:28 EDT 2004 | russ
Remove the paste from the fridge the night before, If you feel the need to knead we just put the paste on the stencil and work it a little bit with a spatula. Russ
Electronics Forum | Sat Jul 24 04:18:39 EDT 2004 | kent_peterson
Microwave? Try some steel wool next time. Are you cookin food in that microwave? I would love to see that documented into a process. You could look at changing the solder paste you use. Knead it up other than that mate.
Electronics Forum | Fri Jul 29 10:03:02 EDT 2011 | blnorman
At a previous location we used the Semco cartridges. Occasionally the operator would have to scrape down the stencil and knead the paste back in. That would keep the paste on the edges from drying out. It was just standard procedure.
Electronics Forum | Tue Sep 18 13:58:01 EDT 2001 | ert002
50%) only over the appertures where there was poor support. Most prints took 2 knead strokes to print OK, but this caused fine pitch leaded devices to almost short. stencil had to be be wiped after kneading. 2 similar devices with exactly the same
Electronics Forum | Wed Aug 29 20:48:09 EDT 2001 | Jones
I know this is not the answer to your question but it may help until you get the right cleaning process in place. I have found that kneading the paste with 3-4 double strokes during the first print has aided in bring our defective ppm down somewhat.
Electronics Forum | Fri Sep 13 14:21:49 EDT 2002 | blnorman
Run a test, but in our experience, yes you can reuse the paste. We ran tests on paste that was left on the stencil at the end of second shift, we put the paste back on the stencil the next day on first shift with no problems. You definitely want to
Electronics Forum | Tue Jul 02 15:50:28 EDT 2002 | blnorman
FIrst, be a doubting Thomas and never trust supplier propaganda sheets, do your own testing. How often do you knead the paste? We have a standing requirement that if the paste printer is idle for 30 minutes, we have a minimum of 4 kneads before pri
