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Electronics Forum | Wed Jan 03 08:22:08 EST 2001 | G. English
Hi, all the best to you smt' netters for the forthcoming year. I am looking for a one stop shop for surface mount consumables, in particular, stencil IPA wipes, printer under screen cleaning rolls, gloves, dry wipes, squeegee blade replacements etc
Electronics Forum | Tue Oct 24 09:35:56 EDT 2000 | Wister
Our important customer demanded us to use 12mil thick stencil,it is too difficult to release solder paste from stencil.it is not helpful even I ask stencil supplier polished the openings.The flux content is 10%. I want to ask if the polyurethane sque
Electronics Forum | Thu Mar 17 13:03:21 EST 2005 | Slow Ride
When it comes to solder paste, you should worry about volume. Granted height is a part of the equation, but you could have perfect height and still get defects. I wouldn't get too wrapped up in volume either, unless you're evaluating stencil height
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 | Fri Nov 15 17:35:01 EST 2013 | hegemon
I'm not sure eyesight is needed to check for blade damage. Close your eyes. Run your finger along the edge of the blade. If you feel any roughness or "catching" as your finger drags, then you have a damaged blade. SPI would tell you this as well,
Electronics Forum | Tue Feb 14 18:02:02 EST 2023 | cyber_wolf
The slower the squeegee speed the more tendency for "drag out" Raise the print speed and pressure. Rule of thumb 1.5 to 2 LBS squeegee pressure per inch of blade to start. OR try 2 passes with the squeegee.
Electronics Forum | Tue Dec 19 11:58:27 EST 2006 | realchunks
Oh sh*t, we have the same "problem". But it's not really a problem. Depending on how thick your stencil is, and at what speed you run your squeegee blades at, you will get this deflection of the stencil. Age of the stencil is also a factor. You c
Electronics Forum | Mon Oct 16 16:30:27 EDT 2023 | yannick_herzog
@MagyarT the error occurred across multiple PCBs throughout the entire job. So, for example, the issue isn't limited to just the first printed one but spans the entire duration. At what dimensions would you recommend a division? The apertures on the
Electronics Forum | Tue Jul 16 21:35:48 EDT 2002 | davef
Reworking used paste. We do not rework or reuse used paste, because we have no experience reformulating paste or controlling the process. Squeegee life. We do not use squeegees with damaged blades. After that, if we can fixture them and get good
Electronics Forum | Tue Oct 31 01:08:25 EST 2000 | Dreamsniper
Here are some: Printing Speed : 2.5 ips (inch per sec) Stencil Thickness: 10 - 12 mil but the latter is the best. Dots sizes: u can get that from the Forum Archive...I used Dave F's dot sizes recommendation...they are good! Squeegee Blade : use met
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