Here is something I found , I hope it helps :
Subject: Re: Repair of fiducial fill material From: Taylor, Royce Reply-To: TechNet E-Mail Forum. Date: Fri, 15 Dec 2000 09:34:59 -0500 Content-Type: text/plain
I use a epoxy pen that my stencil house gave me
it says:
HEAT CURE EPOXY INK AM-33 HC-883 BLACK For Professional Use Only, Made in USA
It does not give the vendor.
I fill the fiducial and "CAREFULLY" heat the area with a heat gun, works great, but it doesn't last forever..
Royce Taylor Engineering Manager Sanmina Corporation 10 Manor Parkway Salem, NH 03079 (603) 896-2192 (603) 896-2063 royce.taylor@sanmina.com
-----Original Message----- From: Julien Bouchard [mailto:julien.bouchard@matrox.com] Sent: Friday, December 15, 2000 7:39 AM To: TechNet@IPC.ORG Subject: Re: [TN] Repair of fiducial fill material
Thank you for your answer, it should really help. But what is the loctite 4501 ? I found nothing about this on the loctite web site ? IS a cyanocrilate or an epoxy base glue ?
-----Original Message----- From: TechNet [mailto:TechNet@IPC.ORG]On Behalf Of Joe V. Ottesen Sent: 15-Dec-00 02:21 To: TechNet@IPC.ORG Subject: Re: [TN] Repair of fiducial fill material
Julien Bouchard wrote:
> Hi everybody, > We recently start to use an ultrasonic stencil cleaners for our stencils. > It' work well, but after some time, we saw a lot of fiducial that the black > epoxy have been partially or totaly remove. I want to know if someone had a > similar problem with a stencil cleaner. Also, we looking for a material to > repair the black epoxy of the fiducial ( for now we use ink pen, but we need > to redo the job everytime we change of product). Our stencil are from UTZ > and our stencil cleaner is from SMART-SONIC. Thank you. > > Julien Bouchard > Matrox - Process Engineer > Email : julien.bouchard@matrox.com > > -------------------------------------------------------------------------- ------- > Technet Mail List provided as a free service by IPC using LISTSERV 1.8d > To unsubscribe, send a message to LISTSERV@IPC.ORG with following text in > the BODY (NOT the subject field): SIGNOFF Technet > Search previous postings at: http://www.ipc.org > On-Line Resources & Databases > E-mail Archives > Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional > information, or contact Keach Sasamori at sasako@ipc.org or 847-509-9700 ext.5315 > -------------------------------------------------------------------------- -------
Hi,
I have also seen the problem, with the same cleaning equipment. To repair the fiducial and get the best contrast we use a Loctite 4501 kit. Today our stencil deliverer is pigmenting the metal in the half etched fiducial mark and it works like a dream.
-- best regards Joe Vella jvo@bbelectronics.dk Website http://www.bbelectronics.dk
HCarrasco
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