Electronics Forum | Wed Oct 12 11:02:59 EDT 2016 | hken
I think stencil manufacturers back fill half etched fiducials with black epoxy or something. I know I've had some worn and that's what I've done for my vision systems to be happy again.
Electronics Forum | Wed Oct 12 13:44:10 EDT 2016 | dekhead
Yes, bottom-side fids are usually half-etched with epoxy fill. just the half-etch gives a pretty "dirty" looking fid.
Electronics Forum | Wed Oct 12 13:55:14 EDT 2016 | dekhead
OLD DEK manuals actually have a procedure for fiducial fill, and they used to sell a kit (for way too much $$$$); since usually pretty well covered by stencil vendors probably not on the list any more. www.dekhead.com
Electronics Forum | Thu Oct 13 02:46:49 EDT 2016 | andreimoris
Yes, I read about filling the fiducials with balck epoxy, but it was said that it doesn't last for long. Thank you for your reply.
Electronics Forum | Thu Oct 20 05:56:56 EDT 2016 | fadzril
Basically, what is the main issue which requires you to use black fiducials? Stencil mark recognition issues? Solder printer machines have ability to adjust the brightness or contrast.
Electronics Forum | Wed Nov 09 09:11:36 EST 2016 | sumote
Yes, I read about filling the fiducials with > balck epoxy, but it was said that it doesn't last > for long. Thank you for your reply. They don't last for long? They should last forever. The fids are on the bottom of the screen. Why would they w
Electronics Forum | Wed Nov 16 10:20:18 EST 2016 | markhoch
Why would they wear off? Many people use ultrasonic stencil cleaners which will breakdown the epoxy over time and wash it away.
Electronics Forum | Mon Nov 07 15:08:07 EST 2016 | hken
That's fine for Toshiba but what do you do for other Mfg's with different formats? And how do you resolve the 255 character input limit in Access for Mfg's with more characters in the barcode string like Vishay?
Electronics Forum | Wed Oct 12 12:54:27 EDT 2016 | toddm
I need to do a camera to nozzle calibration on a Quad IVc. I was told to use silly putty. I now need to know step by step what to do.
Electronics Forum | Wed Oct 12 13:29:33 EDT 2016 | bobpan
Hello Todd, Go to my website: www.precision-repairs.com Send me an email from there and I will send you a document that has the calibration procedure in it. Bob
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