Electronics Forum | Thu Nov 13 17:52:13 EST 2008 | dingstinger
My name is James and live in Colorado. Through an interesting turn of events lately I have gotten back into repairing coined PCB metal stencils. I am in a differant industry but have come up with a proven way to fix imperfections in metal stencils. W
Electronics Forum | Fri Feb 15 08:13:18 EST 2002 | Dave G
What Snap-Off are you running ? I've seen this happen when a large negative Snap-Off is used. If you "contact" print (I.E. Zero Snap-Off) this tends to minimize the stencil coining. We use a mix of MPM & Transition Automation blades. I have noticed
Electronics Forum | Thu Sep 09 18:58:11 EDT 2021 | cyber_wolf
I have never witnessed a "worn out" stencil in my 30+ years. Take that with a grain of salt..My environment is CM so stencil usage is somewhat limited. I have seen "coined" stencils. They look funky but some schools of thought say they work better
Electronics Forum | Mon Feb 25 10:32:06 EST 2002 | cyber_wolf
Jeezuz... Darby is right. High Tech Squeegee blades are a crock of BS.Don't belive the hype. Its a big scam to rake in your dough. We use .008" thick spring steel stock from McMaster. There is only one thing:The blades must be dried off thoroughly af
Electronics Forum | Mon Mar 15 23:00:40 EST 1999 | Dave F
| In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. | Later on we started to us metal stencils, glued in A polyester screen. even than we had som
Electronics Forum | Tue Mar 16 08:38:59 EST 1999 | George Verboven (Process Engineer)
| | In the early days, we used screens made of stainless steel or polyester. Sometimes - after A period - the tension was not good, because A wire was broken. | | Later on we started to us metal stencils, glued in A polyester screen. even than we had
Electronics Forum | Thu Jan 09 11:15:12 EST 2020 | cyber_wolf
Stencil lifespan depends on several factors such as squeegee type, squeegee pressure, handling,and foil thickness to name a few. There is no magic number. The best judge is your SPI machine if you have one. We typically start thinking about replacem
Electronics Forum | Thu Mar 22 10:07:48 EDT 2012 | hussman
We chose the MPM over the DEK. We did real world comparison in our factory with both machines almost side by side last year. MPMs offer a real windows based software that basically takes the operator out of the equation. Besides the basic screen p
Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef
Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c
Electronics Forum | Fri Oct 25 12:23:49 EDT 2002 | yngwie
Hi Experts, I'm facing short problem with BGA at SRT rework in one particular BGA. It is BGA, with a metal piece at the center like a coin. The BGA is located in between two high profile press fit connectors and the short always observed at the si
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