Electronics Forum | Mon Feb 23 15:10:02 EST 1998 | justin medernach
| Stencil Opening | Looking for spec or any info to specify stencil opening for TSOP48 20mil that will consider also thickens and direction of printing, if applicable Ron, Use a six mil foil thickness for your stencil. Go one to one with your apert
Electronics Forum | Mon Jul 29 18:51:47 EDT 2002 | davef
Consider: * Printing: errors [ie, insufficient, excess, skipping, etc.] paste doesn�t roll in front of squeegee, paste adheres to squeegee at the end of stroke, paste does not release. * Component placement: orientation, wrong component, missing comp
Electronics Forum | Wed Feb 25 02:33:52 EST 1998 | Scott McKee
| | Stencil Opening | | Looking for spec or any info to specify stencil opening for TSOP48 20mil that will consider also thickens and direction of printing, if applicable | Ron, | Use a six mil foil thickness for your stencil. Go one to one with yo
Electronics Forum | Fri Jul 30 19:27:40 EDT 2010 | dman97
Hi All, Does anyone know how to repair a UP2000 that has the front squeegee lower than the rear? Can this be fixed by playing with the drive belts? The front squeegee is sitting lower than the rear and thus gives an uneven print stroke. The front s
Electronics Forum | Thu Dec 20 08:00:50 EST 2007 | avalancher
Many years ago, we used to double print. The way we did it was with a rubber squeegee set to do a flood stroke, followed by a return cleaning stroke with a metal squeegee. Why?! Well, this was in the days before Laser etch, and because the chem bat
Electronics Forum | Tue Mar 20 10:27:36 EDT 2007 | davef
Print styles: Print - Most common print mode * A single print stroke forward on first board * A single print stroke reverse on next board Print-Print (Double Print) * Both forward and reverse printing strokes * Helps to ensure complete filling of th
Electronics Forum | Tue Oct 27 12:31:24 EST 1998 | Sanjay Bhatikar
SMT-ers I notice that most suppliers provide data that is eye-catching but avoid providing data of significant technical relevance, such as Cp and Cpk. It would perhaps be a wise idea for standards to be formulated in this area. For eg., ma
Electronics Forum | Mon Oct 31 03:42:47 EST 2005 | pavel_murtishev
Good day, Problem appears only with 0.5mm pitch components. Print quality for these components is unacceptable. Paste type isn�t new for us. No any tape on the bottom of the stencil. We apply enough pressure on squeegees, stencil remains clear after
Electronics Forum | Tue Jun 01 18:06:36 EDT 2004 | Rob
I used an Ultraprint 2000 so if that's what you use then maybe I might be able to help. First, I'm assuming that you've already passed the Teach New Board section. This is board dimension, X and Y boardstop, stencil/squeegee heights and strokes. If
Electronics Forum | Thu Aug 12 22:38:44 EDT 1999 | Dave F
| Hello | | Having a problem with bridging on 20mil pitch qfp, only on the lead groups where squeegee goes over width of apertures. Using MPM sp-200 semi-auto, chem-etch stencil, 9-10mil width opening | 100 durometer blade. Getting "tails" on deposi
