Electronics Forum | Fri Jun 27 10:34:16 EDT 2008 | realchunks
Not these days. Most parts have several molding marks. Or the entire edge has a bevel. Using the ink as polarity is becoming mainstream.
Electronics Forum | Mon Dec 21 14:38:11 EST 2009 | bandjwet
Does anyone know of a vendor of "black top" to fill in voids left by laser "X-out" patterns in the top of an epoxy (plastic) package ? We are demarking an area of a device and would like to fill it in with something other than a colored epoxy. Reg
Electronics Forum | Wed Sep 08 21:17:05 EDT 2010 | davef
Technical data sheets from the ink supplier will: * Describe testing has been done * Recommend to their customers the limits of exposure to thermal, chemical, and mechanical conditions.
Electronics Forum | Mon Jul 02 03:55:07 EDT 2012 | mccabekev
We are having a problem with inspection markings on our boards running when conformal coating is applied We have tried standard permanant markers, and also paint markers, but both run when the coating is applied. There must be someone out there who
Electronics Forum | Mon Jul 02 08:57:21 EDT 2012 | dontfeedphils
It'll probably help to know what type of coating you're using on your boards, how it's being applied, and how it's being cured.
Electronics Forum | Mon Jul 02 10:44:14 EDT 2012 | mccabekev
We are applying a SR conformal coating via aerosol. Both permanent marker and paint pen are running as soon as the spray hits it
Electronics Forum | Tue Jul 03 03:12:20 EDT 2012 | mccabekev
Unfortunately our customers expect this coating on the boards so that is not an option. There must be something that can mark underneath without washing off. The silk screen doesn't wash off
Electronics Forum | Tue Jul 03 03:13:14 EDT 2012 | mccabekev
Unfortunately our customers expect this coating on the boards so that is not an option. There must be something that can mark underneath without washing off. The silk screen doesn't wash off
Electronics Forum | Wed Jul 18 08:44:20 EDT 2012 | leeg
We use the Edding pen as stated but then apply a quick set epoxy resin over the top and allow to dry, this does work.
Electronics Forum | Wed Jul 18 08:48:26 EDT 2012 | mccabekev
How are you applying the expoxy resin? Why use the expensive pen edding aerospace pen under the epoxy when a cheaper pen will do?
