Electronics Forum | Wed Feb 07 06:37:39 EST 2007 | mk
We have been processing a family of boards for 3 years. No issues. New PCB Vendor and the boards suddenly will not print very well. Sloppy printing definition. Closer inspection reveals that the soldermask is built up .0012-.0019 over the vias, preve
Electronics Forum | Wed Feb 07 07:36:11 EST 2007 | jax
mk, Should I read into the fact that you posted this on a sipad website? You could always add an etch process to you stencil design to gasket around the raised mask locations. It is currently done when additive etch's/trace's are used. The extra $20
Electronics Forum | Fri Sep 12 08:22:31 EDT 2008 | davef
Your supplier is probably the best source of advice on this issue. Some offer tips like: http://www.n0ss.net/hakko_808_notes.pdf Depending on the design, some use grease to reduce air leakage on: * Filter tubes * Gaskets or O-rings * Threads We ha
Electronics Forum | Fri Nov 05 13:58:23 EDT 2010 | chartrain
I agree that the tines (webs between apertures) can become damaged on fine pitch stencils from a blast of air. If they get bent, the stencil won't seat and gasket properly allowing bleed out of paste. Of course we all know that the air being blasted
Electronics Forum | Wed May 22 12:59:09 EDT 2013 | cyber_wolf
That sounds very odd what smter is saying. The screws around the outside of the fans have nothing to do with the bearings. You only really need to tighten those screws enough to squish the gasket a little. No special torque settings required. As lon
Electronics Forum | Wed Apr 26 19:10:43 EDT 2023 | cyber_wolf
This machines support table looks similar to AP and UP machines. I believe MPM published the dimensions of the "H" tower that the dedicated plates bolts to. As far as the plate, they are typically (2) pieces with the inside hollowed out to allow for
Electronics Forum | Mon Aug 14 12:06:18 EDT 2023 | calebcsmt
Please elaborate, as I have already tried to rule out printer setup. 0 contact of course, ive tried a multitude of pressures, separation speeds, cleaning frequency. Moreover, i use these settings for similar stencils and have absolutely no issue
Electronics Forum | Tue Sep 26 08:35:58 EDT 2023 | carl_p
There appears to be plenty of alignment issues going on here. As some of it matches up ok & other areas not I would think your support is not ideal & causing gasket issues. Some app sizes also look questionable to me. I would look to ensur
Electronics Forum | Wed Aug 30 23:45:28 EDT 2000 | Ramon I Garcia C
Hi friends; Steve I'm using flux Kester 959, my top temperature is 187 celcius degrees, my e-mail is ramigary@smtnet.com, Travis I'll check the pcb for contamination, but how may I clean the pcb? may I use alcohol? Nance I cleaned the pipes of the
Electronics Forum | Tue Aug 22 12:14:21 EDT 2000 | Tekguy2000
There are concretions that form inside the chamber when using a water soluble paste. They start forming and affecting print as early as 2 days. This is apparent no matter what type of print head you may be using. There has been over 30 water soluble
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