Electronics Forum | Fri Jan 07 05:37:31 EST 2000 | Mark Alder
Hi Niel Manson of Alpha Metals U.K. did extensive research on this subject. He can be contacted at neilmanson@alphametals.cookson.com. Regards Mark Alder
Electronics Forum | Mon Apr 26 17:31:14 EDT 1999 | Earl Moon
| Hey MoonMan, | | Did I catch in one of your fabulous threads that you're using Tetra stencils? I'm anxious to find out how you're liking them. | | We we're all set up to go to Tetras, then mgt decided to close down our factory - Dooop! "Foiled"
Electronics Forum | Thu Jun 11 07:28:12 EDT 1998 | smd
Before risking screwing up the alignment of the frame, and upon the advice of several SMTNET users, I decided to see if I could get away W. just changing the screws. I found screws with 2x the pull strength as Alpha's. But they didn't fit!! The Alph
Electronics Forum | Thu May 28 21:35:12 EDT 1998 | Soeurn Ses Top Line
| | | Does anyone use the "Quick Frame" with their Dek printer? | | The threads on the screws keep stripping, so we thought | | maybe we'd send our frames to a machine shop for heftier | | screws. Has anyone done this? Is there a better way? | | Isn
Electronics Forum | Mon Jun 14 12:16:03 EDT 1999 | Earl Moon
| I am looking into Alpha's system, and would appreciate some feedback from anybody using it currently. I am concerned about about the life expectancy of the foils if they are clamped and unclamped every couple of days, and what happens if one of the
Electronics Forum | Wed Jul 13 14:56:53 EDT 2005 | jdengler
I read the Cookson/Alpha paper "Optimizing stencil design for Lead-free SMT processing". I interpreted it to mean that if you had a mid chip solder ball (MCSB) problem the "radiused inverted home plate of 20/60/20 style" had the greatest impact on r
Electronics Forum | Sun Sep 27 22:39:55 EDT 2009 | rajeshwara
The same issue i faced 2 yrs before , i sugest 1. Use stencil of 4 mils ( Take care of Aspect Ratio and Area Ratio ). 2. Use Solder Paste of Type 4.5 and Viscosity in between 1100 to 1300. ( Try Solder Paste of Cookson or Alpha metals : OM338 T45-L
Electronics Forum | Mon Jun 14 15:05:10 EDT 1999 | John Thorup
| | We have been using Alpha Tetra/DEK Vector for the last 3 years. Prior to that we were using mesh on frame. | | We do about 15 job changes a day and our main runners are loaded about 4 times per week. In the three years we have been using the sys
Electronics Forum | Wed Jun 02 06:58:40 EDT 1999 | Earl Moon
| | We are looking into frameless stencil systems for screen printing. Outside frame size of 29x29. | | | | Pros: smaller storage requirements and cheaper stencils. | | | | Cons: sharp metal edges, additional change over time required | | | | Can
Electronics Forum | Wed Dec 18 07:22:23 EST 2013 | davlec
We have not tried VectorGuard, so I cannot comment on that specific solution. However we have been using a Tecan Genesis system for several years and are very pleased with it. Unlike the DEK solution, the tensioning is entirely mechanical so there is
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