It is a very interesting techinque indeed. Part of the problem with
using sharpie ink, is getting the fine lines - I have yet to
get .012" wide lines with any of the markers I have tried (extra
fine point, super fine, etc.). The line either bleeds out a bit too
much or it's just plain too fat.
Using the wax adds a whole new avenue of trying different things. I
have never done any "printing" using home-made pens like that. But,
if I could get my hands on some needles, I think I would be willing
to give it a go. I would suspect that if you can control the
tempurature good enough, you could heat the wax up, then draw the
lines like a regular pen as opposed to heating-cooling for each
droplet.
I suspect the surface tension of the liquid wax would keep it from
running out of the needle when it is not in contact with the PCB.
All around it's interesting and certainly merits some further
tinkering.
Chris
--- In
Homebrew_PCBs@yahoogroups.com, Mycroft2152 <mycroft2152@...>
wrote:
>
> It's interesting that Zoran published his plans this
> time of year. The use of paraffin as a resist has a
> long history in decorating Easter Eggs. Google Ukraine
> Easter Eggs for some incredible desings.
>
> Paraffin is also used on fabrics for 'Batik' designs.
>
> I was surprised to see no dots visible in the enlarged
> traces, and some of the right angles were very sharp,
> may be too sharp.
>
> I would also like to know how long it takes to plot a
> board. The fine diameter of the needle neededto ge the
> resoltuion shouwed, would indicate many many passes to
> make a wide line. Yet the lines seem to be completely
> filled.
>
> Overall its an interesting application, but very
> similar to using a "sharpie" marker to draw out the
> pattern.
>
> TANSTAAFL!
>
> Myc
>
>
> --- javaguy11111 <javaguy11111@...> wrote:
>
> > This was not explicitly explained on the website,
> > but this is how I
> > interpreted it.
> > It looks like a small copper cup with a small heater
> > using an smd
> > resistor. Paraffin wax is melted inside the cup. A
> > small hollow needle
> > is attached to the cup. The needle is tapped against
> > the board which
> > draws out some melted paraffin which solidifies.
> > This process is
> > repeated about 200 times per second while moving the
> > needle.
> > It sort of made me think of something like a tatoo
> > making process.
> >
> >
> > --- In Homebrew_PCBs@yahoogroups.com, roger lucas
> > <ralucas4277@> wrote:
> > >
> > > Zoran,
> > >
> > > Sounds a great idea, but unfortunately the site
> > always
> > > seems to be unaccessable. Could you post some
> > details
> > > on this forum so we can understand the details.
> > >
> > > TIA
> > >
> > > Roger
> > >
> > >
> > > --- zoran_vasiljevic2000 <v.zoran@> wrote:
> > >
> > >
> > > ---------------------------------
> > > Zoran's plotter is similar to a regular X/Y
> > plotter,
> > > except that it
> > > does not
> > > use ink, it uses melted paraffin (wax), for
> > drawing
> > > on PCB laminate, and
> > > for making PCB. After drawing, it is developed in
> > > Ferric Chloride,
> > > according to the well known process.
> > >
> > > For more, open the link:
> > >
> > >
> >
> http://ca.geocities.com/zoran_vasiljevic2000/index.html
> > >
> > > Thanks,
> > > Zoran
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Be sure to visit the group home and check for new
> > > Links, Files, and Photos:
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> > >
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> > post
> > > them here:
> > >
> >
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