Electronics Forum | Mon Nov 12 16:12:55 EST 2001 | davef
Years ago, we used a specialty-marking pen like you describe. The pen has: * �Fluxmarker 6135 W BELMONT CHICAGO IL 60634 / 1-312-889-8323 Illinois / All other states Toll Free 1-800-621-0080 bla bla bla � marked on the barrel. A quick search with G
Electronics Forum | Thu Nov 15 13:51:23 EST 2001 | jhingtgen
John, To answer your question, we have a number of customers that are using this process, Pumpprinting very successfully! If you would like to contact myself I can provide you with some very good references that will be able to answer all your ques
Electronics Forum | Mon Nov 26 15:30:35 EST 2001 | jhingtgen
To all, For the benefit of everyone there will be a session conducted at APEX on this topic. I have included the information that I pasted from the APEX website (http://www.goapex.org). ADHESIVE PRINTING Chris Marinelli, Loctite Tuesday, Janua
Electronics Forum | Fri Nov 16 14:10:01 EST 2001 | mparker
I have oftened wondered how this industry lets its workers get away from being responsible. The best way I know of is to have them buy their own tools. Just take a look at the trades - carpenters, plumbers, welders, sheet metal men, body repair, mech
Electronics Forum | Fri Nov 23 03:40:09 EST 2001 | ianchan
Hi All, agree 100% on product characteristics SPC, and do find process indicators such as paste Volume, useful to monitor via SPC, the printing process, as printing constitutes "70% cases of SMT defects". We juz purchased a 2nd hand CyberOptics 3D
Electronics Forum | Tue Nov 27 10:16:07 EST 2001 | davef
Oooo, I get it. We do that trick on the wave solder side of boards. On the bare board, during design / layout, the basic shape of the jumper is a 125 thou disc of copper [that of course is eventually covered with whatever solderability preservative
Electronics Forum | Sun Nov 25 22:54:20 EST 2001 | ianchan
Hi All, We juz purchased a 2nd hand CyberOptics 3D paste inspection machine (what a mouthful...) and am seeking info : 1) what formulae is applicable, to calculate the deposited solder paste volume onto the pre-defined PCB pads? 1.a) from our obse
Electronics Forum | Sun Dec 09 22:54:20 EST 2001 | dburr
It sound you have already discovered to root cause, flux entrapment in the via holes. Short of changing the desing, here are sone suggestions. The main thing is you have to dry out the via holes of the wet flux. Some things to try are: slow down t
Electronics Forum | Tue Nov 27 16:18:34 EST 2001 | MikeF
Can anyone give me a brand name on a chair with casters that only rolls when it has weight on it? A couple of jobs ago we had chairs for the operators that would only roll after someone had sat down, that way they would not roll away while someone wa
Electronics Forum | Wed Dec 12 07:38:04 EST 2001 | smtspecialist
I have observed the same thing with solder composition in this case I am using 63/37 NC which is giving good results usualy. The liquid tin, product from MG Chemical that I used is to tinplates copper circuit on PC boards. I tried on few relays, it
