Electronics Forum: stencil (Page 291 of 575)

Volume of paste deposited with respect to board thickness

Electronics Forum | Tue Jun 01 07:26:55 EDT 2004 | johnwnz

Alistair, your paste deposit is controlled by a few things: Stencil thickness Squeegee pressure Squeegee speed Print gap in 99 out of 100 applications for paste printing you would have a print gap of 0 i.e. on contact printing where the PCB is in fu

MPM Teaching Vision

Electronics Forum | Tue Jun 01 18:13:19 EDT 2004 | black5629

I been using pads as fiducial, I am at end where the camera moves back and forth between the board and stencil, then it errors out.I been using single not multi, do I have to go to multiple since I am using pads? Thanks

MPM Teaching Vision

Electronics Forum | Wed Jun 02 11:33:00 EDT 2004 | Vinnie

I think you are right. Board stop on Y. Vision square is the stencil fiducials. So if you are using pads.... I am not sure. But why didnt you used board fiducials? none on the board?

MPM Teaching Vision

Electronics Forum | Wed Jun 02 19:03:11 EDT 2004 | black5629

My board is in the center, it appears that it would read the stencil but not the board. " Board Model NOT found".I am open for any input.

Gel Flex Tooling

Electronics Forum | Thu Jun 24 22:59:49 EDT 2004 | Ken

I was wondering what Dow Corning has done with all those silicone breast implants? B or C cup would work nicely (in the stencil printer).

Wave solder claw/finger cleaning chemical

Electronics Forum | Wed Jun 09 15:53:09 EDT 2004 | Ordie.

You might want to try Zestron. They make a lot of different cleaners. We use Zestron SD 300 if we clean a stencil by hand. It works great, a lot better than alcohol. Go to http://www.zestron.com. Hope this helps.

On contact calibration

Electronics Forum | Mon Jun 14 04:44:15 EDT 2004 | Sam

1. Don't use a PCB for calibration because the tactile sensor have to free to touch the bottom side of stencil. 2. The wiper is option, the function can be disable in the setup menu.

0402 wave soldering

Electronics Forum | Sat Jun 12 04:06:33 EDT 2004 | Steve

Hi, Anybody has the experience or information of mounting the SMD 0402 on solder side of PCB by adhesive (apply by stencil printing) and then wave solder the 0402? Best regards.

Storing non-framed stencils

Electronics Forum | Wed Jun 16 03:41:10 EDT 2004 | Scott B

Have a look at the following link. We have bought two of these wallet storage systems for our foils. http://www.tecan.co.uk/UK/_03StorageSys.html

Dispensing Paste for 0201-0402 uBGA devices?

Electronics Forum | Thu Jun 24 09:24:03 EDT 2004 | Rob

The smallest component we use is 0402. Solder paste is Kester 256. Printer is MPM Ultraprint 2000. Stencil is 6 mil. I didn't here anything bad (rework or whatnots) in terms of soldering of those components.


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