PCB toner transfer etchants
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From: Darren Brumfield on 21 Feb 2010 21:28 I've been reading up on this and the consensus is that ferric chloride is the most common compound to do the actual "etching". Is there some sort of more widely available chemical that will get the job done? Something I could find at the local walmart? For my needs it doesn't have to be fast (a couple of hours is fine). --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: Jasen Betts on 22 Feb 2010 03:09 On 2010-02-22, Darren Brumfield <brumfield47FAKEPART(a)live.marshall.edu> wrote: > I've been reading up on this and the consensus is that ferric chloride is > the most common compound to do the actual "etching". Is there some sort > of more widely available chemical that will get the job done? Something I > could find at the local walmart? For my needs it doesn't have to be fast > (a couple of hours is fine). This guy used a mix of peroxide and HCl: http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/ --- news://freenews.netfront.net/ - complaints: news(a)netfront.net ---
From: Tom Biasi on 22 Feb 2010 06:28 "Darren Brumfield" <brumfield47FAKEPART(a)live.marshall.edu> wrote in message news:op.u8ibs3zqdnxnbk(a)meganii.c4ui2u.com... > I've been reading up on this and the consensus is that ferric chloride is > the most common compound to do the actual "etching". Is there some sort > of more widely available chemical that will get the job done? Something I > could find at the local walmart? For my needs it doesn't have to be fast > (a couple of hours is fine). Ferric Chloride is the safest for home use. It can be messy though if you are sloppy. Why don't you want to use it? It's pretty easy to get. Tom
From: Rich Webb on 22 Feb 2010 08:00 On Sun, 21 Feb 2010 21:28:05 -0500, "Darren Brumfield" <brumfield47FAKEPART(a)live.marshall.edu> wrote: >I've been reading up on this and the consensus is that ferric chloride is >the most common compound to do the actual "etching". Is there some sort >of more widely available chemical that will get the job done? Something I >could find at the local walmart? How about your local Radio Shack (e.g., Huntington Mall)? Most Radio Shacks still carry ferric chloride etchant, although you may have to fight your way through the cell phones to get to it. -- Rich Webb Norfolk, VA
From: robb on 22 Feb 2010 09:42
"Jasen Betts" <jasen(a)xnet.co.nz> wrote in message news:hlte3f$4a1$1(a)reversiblemaps.ath.cx... > On 2010-02-22, Darren Brumfield <brumfield47FAKEPART(a)live.marshall.edu> wrote: > > I've been reading up on this and the consensus is that ferric chloride is > > the most common compound to do the actual "etching". Is there some sort > > of more widely available chemical that will get the job done? Something I > > could find at the local walmart? For my needs it doesn't have to be fast > > (a couple of hours is fine). > > This guy used a mix of peroxide and HCl: > > http://www.instructables.com/id/Stop-using-Ferric-Chloride-etchant!--A-better-etc/ > > --- news://freenews.netfront.net/ - complaints: news(a)netfront.net --- I have used that link/formulation and it worked well for my small experimental boards. fwiw... i used the double sided copper boards sold by R.S. (copper thckness ?) , toner transfer with magazine paper and i agitated the etching board with a medium/small (#2, #3) cheapo soft plastic bristle artist brush. Brushing along the exposed copper until it appeared etched. my recollection of etching time @ room teperatrure (78 F) was about 2 - 3 minutes hth robb |