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Standard for Stencil printers edges pressure

Electronics Forum | Wed Apr 19 20:33:14 EDT 2006 | davef

I just flew in from (insert city) and boy are my arms tired. pr: Likely, you're correct. The "pound-inch" units should have been the give-away, for us. Good catch. If this is the case, the frame fabricator would be the best source for tensioning

Masking of PWBs prior to conformal coat

Electronics Forum | Wed Apr 19 16:43:05 EDT 2006 | samir

Silicone-based coatings "repel" most foreign,non-compatible materials like peelable solder mask, and rubber or vinyl boots. The result is, uncured material around the vicinity of where the boot was. Trust me. Been there and done that. As a rookie

Point to Ground Measurement

Electronics Forum | Thu Apr 20 13:50:28 EDT 2006 | fredericksr

All, Does anyone sell a safe and effective way to connect a DMM to building ground via a power outlet? Personally, I'm comfortable using a banana plug, but the people that are going to be performing this task may vary in electrical understandin

Screen printing warped boards

Electronics Forum | Thu Apr 20 13:55:31 EDT 2006 | cyber_wolf

Here is the problem : We have 2 AP25 printers with dedicated tooling. After we run side one boards through reflow, we get some warpage in our boards occasionally.(Sometimes we get a lot of warp depending on the geometries of the substrate) When the

Screen printing warped boards

Electronics Forum | Mon Apr 24 09:43:47 EDT 2006 | printerman

What you describe is the X snuggers fitted into the workholder which do need either a flat board or good vacuum to work. There are several solutions. One solution you can try yourself is to use Vacuum cups, ( bellows type) designed into the workholde

Seeking very low volume production reflow oven

Electronics Forum | Fri Apr 21 09:07:50 EDT 2006 | Timothy

My company is currently using point source soldering of SMT components. We have seen some problems due to improper soldering and are looking to switch to a reflow oven/hotplate assembly. Our PCB's range in size but are no larger than 5"x5" and we as

Seeking very low volume production reflow oven

Electronics Forum | Mon May 01 23:23:58 EDT 2006 | grantp

Hi, I off center idea we used when we started. Get a pasta cooker, and put in vapor phase fluid, and then use that. Place the product in the bottom of the inner pot, and then heat on a small hot plate. When the vapor cloud gets high enough and the

Seeking very low volume production reflow oven

Electronics Forum | Mon May 22 15:46:49 EDT 2006 | adlsmt

Grant has a good idea, we started that way also. We made a tank out of stainless steel with copper tube coils about 18" off the bottom. Circulate cold water through the tubes to condense the vapor to keep the loss down. We used electric burners under

QSP2 Monitoring

Electronics Forum | Fri Apr 21 23:37:31 EDT 2006 | SD

My company is very insistant on making our actual production times match the predicted. Perfectly reasonable.... However, the problem is that one operator can beat the predicted rate and another can blow it away 10-fold. I know the problem is tha

Reflow oven

Electronics Forum | Mon Apr 24 04:23:56 EDT 2006 | TA

Hello guys, I am Looking for a oven with the following specifications. Can any one suggest me the best suitable model. Thanks ========================================================== - heating length 2500mm - zone top/bottom 7 - forced convection


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