Electronics Forum: pass (Page 1 of 142)

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Wed Dec 19 15:23:32 EST 2007 | arun2382

Hi, How do single pass and double pass stencil printing compare? Is one preferred to the other? Any risks associated with double pass stencil printing? thanks in advance -Arun

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Thu Dec 20 12:48:03 EST 2007 | arun2382

Thanks for all your comments....my question is answered!

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Wed Dec 19 16:53:41 EST 2007 | flipit

Double pass printing for solder paste is not needed and will cause defects. Redesign your stencil thickness or aperture sizes, change your paste mesh size or type, go to 45 degree blades.

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Thu Dec 20 12:05:46 EST 2007 | realchunks

Not you Steven. Blanket comments like "Double pass printing for solder paste is not needed and will cause defects. Redesign your stencil thickness or aperture sizes, change your paste mesh size or type, go to 45 degree blades." are so way off base.

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Wed Dec 19 22:39:03 EST 2007 | davef

Search the fine SMTnet Archives for previous discussion, like: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=48507

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Thu Dec 20 13:29:27 EST 2007 | slthomas

Ahhhh. Sorry. It's been a crap week and I've got a touch of hair trigger fever. Somebody pour me a Scotch. It's noon somewhere.

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Wed Dec 19 15:32:03 EST 2007 | slthomas

"Any risks associated with double pass stencil printing?" Mostly just too much paste, plus the associated bridging, and your stencil gets dirty quickly. Any gap between the stencil and the board gets filled with paste on the first pass, then migrate

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Thu Dec 20 07:50:12 EST 2007 | realchunks

Good to know there are a few smart people left in this industry like Darby. I love how everyone assumes the original poster was only talking solder paste. We use screen printers for five different materials. Some of which we triple print by design

Stencil Printing: Single pass vs. Double pass

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

Stencil Printing: Single pass vs. Double pass

Electronics Forum | Thu Dec 20 10:15:09 EST 2007 | slthomas

Wow, Chunks, condescension becomes you. Not. I think that in this forum when someone mentions *stencil* printing and doesn't specify what material, we tend to gravitate towards a scenario that involves printing solder paste first, then adhesive. If

  1 2 3 4 5 6 7 8 9 10 Next

pass searches for Companies, Equipment, Machines, Suppliers & Information