Electronics Forum | Wed Mar 16 09:06:07 EST 2005 | russ
This is what I might do, I would purchase either a solder volume (preferred) or at the least a paste height measurement piece of equipmment, The most important parameters with pronting are volume and registration. You need one of these inspection
Electronics Forum | Wed Mar 27 16:54:47 EST 2002 | davef
STARTING RANGES * Pressure � 1 pound/inch of blade (metal); 1.6-3 pound/inch (plastic) * Speed - 0.5 to 3 inch per sec [for standard pitch]; 0.5 to 1 inch per sec [for fine pitch] Your paste supplier�s recommendation is a good place to start. * Sepa
Electronics Forum | Thu Dec 16 13:13:27 EST 2004 | Hiren
Sould anyone explain me pros and cons of stencil and screen printing and the advantages of using a screen printing over stencil printing
Electronics Forum | Thu Dec 16 15:00:20 EST 2004 | glaucon
Simple differences. Both processes require a very similar machine platform, controlled motion, vision fiducial recognition and alignment of a substrate (PCB or hybrid ceramic) to the "image", the image being either a stencil (hence stencil printing)
Electronics Forum | Thu Nov 03 05:55:34 EDT 2016 | lachrymal
Hi, I am struggling to interpret correctly the following statement: "An aperture oriented with its long axis in the same direction as the blade stroke does not fill as well as an aperture oriented with its short axis to the blade stroke." If I a
Electronics Forum | Wed Nov 09 04:16:14 EST 2016 | lachrymal
Hi MPMENG, Thanks for you reply. I must say I am printing onto wafers& I'm still somewhat new to the process but much of the theory is the same as for PCB. I trialled it in the mean time and I did find that printing into the long side of the pad wa
Electronics Forum | Tue Nov 08 12:05:57 EST 2016 | aemery
Lachrymal, Where are you getting that from. Let me keep this simple because there can be so many variables in modern printing, some you can control and some you can't. Unless you are designing your own PCB's where you can decide how to orient the co
Electronics Forum | Wed Apr 17 02:30:03 EDT 2002 | seje
Hello. There is been a lot of talk about thick plastic stencils vs. metal stencils for adhesive printing, but how about thin plastic stencils? We used to use a very thin plastic stencil (from loctite) with printgap (=snap-off) to adhesive printing
Electronics Forum | Mon Dec 01 02:54:05 EST 2014 | divia
Yes nano coating giving the good printing, but the stencil tension is very important for the life, 1st ensure the stencil tension...
Electronics Forum | Thu Nov 20 11:28:41 EST 2014 | markhoch
I've spoken with a number of Engineers about this subject and there didn't seem to be a consensus number. In my own experience, I found that we were replacing the stencils after approximately 30,000 print strokes. In my predictive maintenance spreads
