Electronics Forum | Mon Oct 02 09:24:48 EDT 2006 | Chris G.
Daxman, Did you get my e-mail? I'm feeling generous today, so I can fax you cal. proceedures and maybe loan you a c-tool. Let me know if you still need help.
Electronics Forum | Fri Sep 22 13:59:40 EDT 2006 | realchunks
Be careful of inverted homeplates if you hand clean your stencils. The "spikes" can easily catch on the wipe being used and bend up. Not to mention the nice slashing it does on your hand that immediately some how fills with solder paste.
Electronics Forum | Mon Sep 25 14:57:02 EDT 2006 | jaimebc
For this inverted homeplate, the edges are rounded vs. spikes. Check image here : http://www.emasiamag.com/article.asp?articleid=669
Electronics Forum | Mon Sep 25 15:13:57 EDT 2006 | realchunks
Yup, seen them too. Be care not to apply too much squeegee force or you could start to see these curl up as well.
Electronics Forum | Mon Sep 25 17:02:42 EDT 2006 | jaimebc
Thnaks for the tips so far. I am currently reading our paste manufacturer's procedure for handling solder paste. I will try to adhere to it and control our old vs new paste.
Electronics Forum | Tue Sep 26 10:39:35 EDT 2006 | aj
Just to update you on what I have found. I was using Indium leadfree paste and I switched to Alpha OM338 Leadfree Paste. Problem gone...no more MCSB. aj... I have no affiliation with either ofthe above mentioned companies.
Electronics Forum | Tue Sep 26 11:05:44 EDT 2006 | slthomas
You might also have a dirty/sticky Z-rod resulting in the same problem, although ordinarily you'll see a lot of missed pickups as well.
Electronics Forum | Tue Sep 26 15:09:17 EDT 2006 | slthomas
I hope that you don't miss that data later on. My suggestion of changing align type to "2" (in the extent data) eliminates the alignment step but leaves the data intact.
Electronics Forum | Wed Sep 27 16:37:11 EDT 2006 | avalancher
That's funny... I thought that the Quads were DESIGNED to PRETEND TO PLACE PARTS..... you mean, you actually gone one to work? I'm impressed.
Electronics Forum | Wed Sep 27 17:21:36 EDT 2006 | slthomas
You'd be surprised what you can overcome with some smarts, some mechanical aptitude, and daily medication.
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