Oh, sorry if I didn't phrase the question very well. I'm familiar with the terminology, but someone said they had used white silkscreen as a reflective background for display boards, (which effectively becomes the mask) and it just got me wondering if the materials had different properties. I SUPPOSE I could do the research on my own instead of bothering everybody (grin) thanks though, Jack . On Tue, 9 Aug 2011 20:04:17 -0700, Bob METCALF <[log in to unmask]> wrote: >Jack, > >Your question is difficult to answer because it relates to terms different >people use. Historically the difference (last 15 years or so) between >silkscreen and soldermask is silkscreen is nomenclature marking on PWBs >and solder mask is the dielectric covering the circuits. Simply stated >that is usually the difference between the two terms. > >Hope this helps! > >Regards, > >Bob Metcalf >Western Regional Manager > >Atotech USA Inc >1750 Overview Drive >Rock Hill, South Carolina 29730 USA > >Mobile: 714-334-7667 >e-mail: [log in to unmask] >Internet: www.atotech.com > >Managing Director: Kuldip Johal > >From: Jack Olson <[log in to unmask]> >To: <[log in to unmask]> >Date: 08/09/2011 07:04 AM >Subject: Re: [TN] White SolderMask >Sent by: TechNet <[log in to unmask]> > > > >Thanks everyone, for taking the time to respond. >That was a new one for me. >(its interesting what I take for granted until something goes wrong!) > >one more question: >Is there a difference between soldermask material and silkscreen material? >Aren't they both just colored epoxies? >(ok, two questions!) > >Jack > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 16.0 To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------