Electronics Forum | Tue Nov 11 10:51:16 EST 2008 | cnelson
Does anyone know where I can find some good supports for my boards during the printing process. I have only managed to find Red E Set, which is along the lines I'm looking for. Thanks in advance.
Electronics Forum | Fri Nov 09 15:52:47 EST 2007 | kmakiya
We have been using Grid Loks on our MPM Accuflex machines and see an offset in the print every so often. Haven't been able to isolate the problem. How bad was the misprint and how was it related to the grid loks? Thanks
Electronics Forum | Mon Apr 26 15:04:14 EDT 2004 | pjc
You are correct in understanding that the vision system comes into play for subsequent boards- to align them. Yes- if you missalign the first board and set the cameras to that board, all subsequet boards will not be aligned. Mylar is a thin polyester
Electronics Forum | Mon Feb 20 20:47:59 EST 2006 | davef
We assume your stencil is clean. So, try: * Reduce stencil separation speed. * Reduce squeegee pressure. If the pressure is not proper, excess number of particles are stuffed into an aperture and inner pressure / friction among particles increase, an
Electronics Forum | Mon Mar 24 14:19:36 EDT 2008 | burb1999
I have a DEK ELA and here is what happens. I print a board after going through the step and it is a dead on print. Then, with another print it will be off in Auto mode (sometimes up and sometimes down, seems to just be up and down not left to right
Electronics Forum | Wed Feb 22 16:55:04 EST 2006 | mark
Hi, We are not using vaccum caps. The support pins for both printers is the same ande cover all board (components only on Top side of the PCB). I will check snap-off (right know setting 0.2-04. mm/s). I also suspected poor gasketing but clamps are o
Electronics Forum | Tue Mar 02 17:26:24 EST 2004 | pjc
I worked on MicroFlex. All axis move via electric motor drive. Carraige reapatability is +/- 0.0005" (12 micron). Cameras position more easily on linear bearings than the swivel type. The alignment accuracy and repeatability easily supports sub-20mil
Electronics Forum | Mon Sep 17 14:57:11 EDT 2001 | ert002
We are printing 0.012" apertures on a .012" Solder mask defined pad in a fine pitch BGA application. The board is 0.032" thick with very little room on the bottom to place support pins under these areas. Our first pilot proved extremely difficult to
Electronics Forum | Tue Sep 18 13:58:01 EDT 2001 | ert002
50%) only over the appertures where there was poor support. Most prints took 2 knead strokes to print OK, but this caused fine pitch leaded devices to almost short. stencil had to be be wiped after kneading. 2 similar devices with exactly the same
Electronics Forum | Wed Sep 19 14:58:03 EDT 2001 | jschake
You provided excellent detail, and unfortunately I do not see anything out of the ordinary except the tooling issue. This brings us back to the original tooling related questions you had asked before. My apologies for questioning your process integ
