Electronics Forum | Fri Jun 24 07:02:35 EDT 2005 | davef
Problem 1: Solder shortage * Stencil aperatures [except the heat slug] should be 1:1 with the board. * Stencil should be 5 thou thick laser cut. * Board should be 1:1 with the component * Print should look good. Problem #2: Bad connection between p
Electronics Forum | Thu Nov 01 22:19:57 EDT 2007 | lvzhu
The solder that we used is kester EM918 and Multicore LS328. Our printer machine is DEK-photon, this machine has supply below 300mm/s. the datasheet solderpaste of speed range is 30 to 150mm/s. when we produce the keyboard of the moble phone, this bo
Electronics Forum | Tue Mar 18 14:00:25 EDT 2008 | rrpowers
There are 2 reasons for wanting to change to an enclosed print system: - Reduce solder paste usage. (We run a high volume application so any reduction in paste scrap is a big money saver to our company.) - Improved print quality. (Ours is a non-rew
Electronics Forum | Wed Jun 04 07:56:36 EDT 2008 | ck_the_flip
Does anybody use a paste mixer in their shop? I am looking at one that uses "Psuedo-Planetary Motion" to mix and soften solder paste. If someone answers "yes", has this benefitted your paste consistency and improved your print repeatability?
Electronics Forum | Thu Aug 12 14:17:19 EDT 2010 | mikesewell
You might reduce your panel size, cut it in half and rotate to better utilize your edge clamping/board supports. Tape off your current stencil and see if it improves the print. A new stencil and a little extra handling may be cheaper than tooling.
Electronics Forum | Wed Nov 02 04:28:58 EST 2005 | Simon
Hi James, I have worked in many SMT sites and this is not an uncommon practice. It is true that print deposit consistency will improve after the first few prints as the aperture walls become lubricated, but with modern stencils/paste and a well-desig
Electronics Forum | Wed Feb 03 15:42:31 EST 2016 | tombstonesmt
The way I view SPI is that is simply a tool. A tool to gather data to improve printing and prevent failures down the line due to screen printer anomalies. They can all inspect paste as necessary, work in closed loop with screen printer and provide a
Electronics Forum | Sat Sep 04 06:01:49 EDT 1999 | Earl Moon
| Dear sirs, | | If you have experienced Proflow of DEK screen printer, please let me know the details of it. | | Best regards, | | Jame Bond | | James, Stir, don't shake is not good advice for cleaning proflo heads. This thing works great, bu
Electronics Forum | Sat Sep 04 07:11:34 EDT 1999 | JohnW
| | Dear sirs, | | | | If you have experienced Proflow of DEK screen printer, please let me know the details of it. | | | | Best regards, | | | | Jame Bond | | | | | James, | | Stir, don't shake is not good advice for cleaning proflo heads. Th
Electronics Forum | Fri Oct 14 12:16:14 EDT 2005 | bschreiber
Be careful when using compressed air, it will not only �blast it all into the air you breathe�, it can also damage the stencil by bending the delicate land mass areas of fine-pitch apertures. I recommend the article �SMT Stencil Cleaning: A Decision
