Grant,
My father is a chemical engineer who spent 40 years in paper
industry. When I found out 6 moths ago that Pulsar used dextrin
coated paper I knew I would have a product. I spent time and money
making such paper trying all kinds of tricks (my father told me it
was insane) and came to conclusion that it cannot be made at home but
it is a great way to quickly learn how clean the laser printer. At
that time I decided to forget about the TT and concentrated on UV
exposure with excellent results, coating my own boards. Then came
along the Staples paper and the laminator and we all know the rest of
it- I became a TT convert.
John Kleinbauer from www.kleinbauer.com, a small CNC machine site,
used a fantastic comparison to baking. I like that example because I
happen to have baked breads for more than 10 years. Yesterday I baked
the world's worst bread! I must have been tired.
As far as regular TT goes, the one that requires ironing, there are
obviously two variables difficult to control (that come to mind):
temperature and pressure (we know that). But keeping pressure at the
max allows us to vary only temperature to achieve good results.
I had 70% success rate when ironing and I have 100% using a
laminator. Yes, I live in US and yes I took a second mortgage to buy
the laminator at Staples... Mike
--- In
Homebrew_PCBs@yahoogroups.com, "grantfair2001"
<grant.fair@s...> wrote:
> I use Dyna-Art paper (now Pulsar) for toner transfer and find it is
> excellent. Briefly (1 minute) soaking in water and it slides right
off
> and away from the toner, no effort, and no paper left behind.
>
> I notice from information from the manufacturer that the "secret"
> ingredient on this paper is Dextrin, a starch product used in
> applications such as wallpaper paste, bookbinding, or gummed tape.
>
> I tested the Dextrin on the Dyna-Art paper with iodine and it turned
> purple/blue. This means that this is amylodextrin, which gives a
blue
> color with iodine.
>
> See:
>
> http://palimpsest.stanford.edu/don/dt/dt1011.html
>
> Some forms of Dextrin are readily available on the internet, for
> example it is used in amateur rocket making and is available from
> United Nuclear:
>
> http://www.unitednuclear.com/
>
> or Post Apple Scientific
>
> http://www.postapplescientific.com/
>
> I would like to try to coat some paper such as the laser/inkjet
> printer papers with Dextrin to enhance release from the tranferred
> toner. Any ideas how to do this? I have thought of making a solution
> of water and Dextrin and spraying a coating on the paper and letting
> it dry.
>
> Grant