I agree. After that message, I went back out to the shop and put
some ink on a PCB to let air dry. After about an hour or so (don't
know the exact amount of time), I rubbed my finger over it and some
of the ink came off on my finger.
I am going to leave it overnight and see if any more rubs off
tomorrow.
I did hit the test sample that I etched with the hot air gun. I
would have expected that to "Cure" the ink. I did get the board hot
enough where it was very uncomfortable to hold by it's edges. So, I
would have thought the ink was cured by that point.
I won't be around much tomorrow so I can't do too much more. Over
the week though I am going to try some other things if the ink
doesn't dry up in the cartridge.
At this point though, I know the ink will act as a resist. I also
know it won't bead up on the copper. Like you guys, I suspect that
proper drying is key. So, that is what I am going to focus on as I
have time - getting the ink to dry, perferably quickly.
Chris
--- In
Homebrew_PCBs@yahoogroups.com, "Randy Ledyard"
<rll_groups@...> wrote:
>
> Chris
>
> What about this? I see it as being like water-based paint. If you
wash a
> semi-gloss paint the day after you put it on, you will get some
paint coming
> off ... but wait a week or two, and the paint holds up to repeated
water
> exposures. Now I know the ink is probably not "curing" in the same
way the
> paint is, but if there was some residual water content in the ink
when you
> put it in the FeCL3, you could be redissolving some of the ink.
That's why I
> think John's suggestion has some merit.
>
> Randy
>
> > -----Original Message-----
> > From: Homebrew_PCBs@yahoogroups.com
> > [mailto:Homebrew_PCBs@yahoogroups.com]On Behalf Of lcdpublishing
> > Sent: Saturday, April 15, 2006 4:38 PM
> > To: Homebrew_PCBs@yahoogroups.com
> > Subject: [Homebrew_PCBs] Re: RE : Epson durabrite ink tests - I
have ink
> > -no printer...
> >
> >
> > Hi john,
> >
> > That would be a good test, but it won't show me much with the
crude
> > tests I am doing. It really needs to be tested on an actual
> > printer. The thickness of the ink is a critcal part in this and
I
> > can't apply an even film with what I have to work with. So, with
an
> > uneven film of ink, the results at best will be "uneven" ;-)
> >
> > Chris
> >
> >
> >
> > --- In Homebrew_PCBs@yahoogroups.com, John Popelish <jpopelish@>
> > wrote:
> > >
> > > lcdpublishing wrote:
> > > > Well, it looks to me like someone with an epson printer that
has
> > > > durabrite ink has to give this a go.
> > > >
> > > Might you try baking the Durabrite in a warm oven or under a
lamp
> > for
> > > a while? It might take a while for the ink to cure into a
tough
> > solid.
> > >
> >
> >
> >
>