I also tried it in my home lab in the basement, &, not even my old 18 inch TV could create any static charge at all on the picture tube when the power was cycled.
I ended up using a 45$ Honeywell humidifier, which used a circular wick at it's base & it had 2 water bottles for filling. Note that water misters aren't as effective.
----- Original Message ----- From: "Brad Velander" <[EMAIL PROTECTED]>
To: "Protel EDA Discussion List" <[email protected]>
Sent: Saturday, May 14, 2005 5:29 PM
Subject: RE:[PEDA] PCB routers and ESD
Darcy,
Just my unqualified comments, sure the router bit is grounded but all the ground fiberglass particles aren't! The fiberglass coming off of the board will surely be carrying a whopping charge. I have used a PCB milling machine (the bit is also grounded) and the fiberglass dust just floats and sticks (electrostatically) to everything.
I would be sure that an ionizer/de-ionizer is a wise additional.
Sincerely, Brad Velander Senior PCB Designer Northern Airborne Technology 1925 Kirschner Rd., Kelowna, BC, V1Y 4N7. tel (250) 763-2329 ext. 225 fax (250) 762-3374
-----Original Message----- From: Darcy Davis [mailto:[EMAIL PROTECTED] Sent: May 13, 2005 3:54 PM To: PEDA (E-mail) Subject: [SPAM] - [PEDA] PCB routers and ESD - Email found in subject
We're currently looking into PCB routers for gentle depanelization of some mechanically sensitive PCBs. Machining FR4 produces very large charge buildups that can lead to ESD issues if not handled properly. On some routers, an ionizer is included to minimize the risk of damage due to ESD. Other machines don't have ionizers, and I'm told they are unnecessary since the spindle is fully grounded. Does anybody have any experience with PCB routing that could give me an relatively unbiased opinion?
Thanks, Darcy
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