Electronics Forum: knead paste (Page 1 of 3)

solder paste

Electronics Forum | Fri Jul 29 10:03:02 EDT 2011 | blnorman

At a previous location we used the Semco cartridges. Occasionally the operator would have to scrape down the stencil and knead the paste back in. That would keep the paste on the edges from drying out. It was just standard procedure.

solder paste

Electronics Forum | Wed Jul 27 09:58:05 EDT 2011 | davef

Pressure printing systems Conventional stencil printing techniques have fundamental limitations as regards paste handling: The volume of paste available for printing is limited, so frequent replenishment is necessary Paste is difficult to c

Solder paste stencil life

Electronics Forum | Tue Jul 02 15:50:28 EDT 2002 | blnorman

FIrst, be a doubting Thomas and never trust supplier propaganda sheets, do your own testing. How often do you knead the paste? We have a standing requirement that if the paste printer is idle for 30 minutes, we have a minimum of 4 kneads before pri

Lead Free paste

Electronics Forum | Wed Dec 06 16:14:25 EST 2006 | realchunks

Assuming you meant 38 percent humidity - I would have to say your environment is only part of the problem. When you experience this problem, is because the paste has set idle for a period of time? If you knead the paste does the fine pitch print OK

Warming up solder paste at start of days production

Electronics Forum | Thu Jul 22 15:18:28 EDT 2004 | russ

Remove the paste from the fridge the night before, If you feel the need to knead we just put the paste on the stencil and work it a little bit with a spatula. Russ

Warming up solder paste at start of days production

Electronics Forum | Sat Jul 24 04:18:39 EDT 2004 | kent_peterson

Microwave? Try some steel wool next time. Are you cookin food in that microwave? I would love to see that documented into a process. You could look at changing the solder paste you use. Knead it up other than that mate.

Warming up solder paste at start of days production

Electronics Forum | Thu Jul 22 21:26:29 EDT 2004 | Grant

Hi, It's removed from the fridge, and the tube is loaded into the stencil printer, however it's winter here right now, so it's still quite cold. It's Australia, so when I say cold, that's relative, however the room can be about 10 dec C in the morni

Warming up solder paste at start of days production

Electronics Forum | Thu Jul 22 06:33:28 EDT 2004 | Grant

Hi, I wondered how people warmed up solder paste at the start of the days production. I saw some paste mixers at a show, but only saw ones that mixed small solder paste tubs, not tubes. Can you get mixers that handle tubes. They said these mixers a

alignment of prints

Electronics Forum | Wed Nov 15 10:26:54 EST 2000 | Rkevin

I'm looking for what I call Mylar, for lack of a better name. We used it at Digital/Compaq to help us knead paste and also to check alignment of prints without actually applying any paste to the module. It was about 4-5 mils thick, clear and came in

alignment of prints

Electronics Forum | Wed Nov 15 10:24:23 EST 2000 | Rkevin

I'm looking for what I call Mylar, for lack of a better name. We used it at Digital/Compaq to help us knead paste and also to check alignment of prints without actually applying any paste to the module. It was about 4-5 mils thick, clear and came in

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