Homebrew PCBs

Markus,

could you please give the Italian distributor info? I am from Slovenia 
and it's very interesting. Do you still have some dry film to sell?

Thanks!
Marko

Markus Zingg pravi:
>
> Andrew,
>
> I payed about $220 for 300 meters, that's roughly 984 foot. 300 meters
> will last you very very long. I acutally sold 250 meters of it and kept
> the remainder. That way I had my 50 meters for about $36.... No if you
> compare this to the very small piece I use for the formentioned stencil
> that's truly almost close to nothing right?
>
> I'm also a user of a german (I live in Switzerland) PCB/Electronics
> forum, and there we usually organise collective orders then makes the
> costs much more reasonable for the individual. You will find that with
> professional bigger suppliers you have to order the rolls of it in pairs
> cause the professional laminators use one roll for top and one for the
> bottom layers of a PCB. They are packaged this way from the
> manufacturers, so it's obvious that a supplier usually is not willing to
> break a package in a part he eventually can't sell anymore therafter.
>
> I use Ordyl Alpha 950 from an italian importer which also operates
> worldwide. Their US office is here:
>
> Lakeville Office:
>
> *ITC Intercircuit N.A.*
> 21625 Grenada Avenue
> Lakeville, Minnesota 55044
> Phone: 952-469-2310
> Fax: 952-469-2007
>
> That's hence at least one US based source I can name for you, but there
> are definately others. Might be that the board shop near you since they
> are not supplying material to you at least is willing to let you know
> who their supplier is should you want to have an alternative. I'm not
> fluent enough in english to know for what to search the internet or
> yellow pages etc. in english.
>
> BUT, why not make a poll here among the US based users of this group who
> would have interest in buying some reasonable amount of it from you (or
> someone else) who buys a pair of rolls? I'm sure either ITC or one of
> their sub supliers will be happy to sell it to you, and I'm also sure
> many users here may want to try it out. I'm happy to assist first time
> users here with questions etc.
>
> The rolls have a limitted shelf live. However, that's mostly only
> important for industrial use. In other words, ask whatever supplier you
> find for end of live rolls. Usually you get them (if available) with a
> steep discount. The ONLY "problem" with these kind of rolls is that the
> material starts to stick together on the outer areas of say a 30 cm
> roll. That's because it slowly reacts with the oxygen in a fashion where
> the resist material starts to kind of glue a little. Only about 2 - 7mm
> are affected, the inner area (alas the huge part of it) will remain
> unafected for many years. You should store the material in a dark dry
> envireonement, and make sure no pressure is applied to it. If you roll
> it, make sure to construct some holder so as the material is "held" by
> the roll itself and not that the roll is laying on a shelf or else the
> material will react at the point of pressure. Let me clearly state that
> the photosensitivity of the material is NOT affected over time if it's
> stored dry, DARK and at reasonable temperatures.
>
> For homebrew use, the above shelf time limitt is of absolutely no
> concern cause you likely will cut off individual pieces which you then
> hand laminate. I for example cut 16.5cm long parts of the roll, which I
> then cut down into two 10.5cm parts dumping the excess. This gives 2.5mm
> of overshot for a so called euro card, and as you can see there will
> always be a remainder (since the roll is 30cm wide). In other words, if
> the borders stick a little (only really just a little) that does not
> matter cause you cut this part away anyways. For industrial use this is
> of course catastropic and as such this is the reason why you should get
> a significant discount ordering THIS kind of rolls. Of course, you can
> also buy "official" material at it's full (se above for an aproximation)
> price.
>
> I could order material here and ship it, but I doubt that this would be
> so very cost effective as oposed to one of you US based guys doing it.
> Should however nobody be found doing this for interested parties here
> (ok, let's wait for the result of a poll) I'm definately willing to help
> you guys out.
>
> Markus
>
> Andrew schrieb:
> >
> > Markus,
> >
> > Where do you get your dry film laminate.
> >
> > There is only one PCB shop in my city and
> > they are not interested in supplying me
> > any consumables.
> >
> > Think-n-Tink sell some
> >
> > http://www.thinktink.com/cgi-bin/cart.pl?db 
> <http://www.thinktink.com/cgi-bin/cart.pl?db>
> > <http://www.thinktink.com/cgi-bin/cart.pl?db 
> <http://www.thinktink.com/cgi-bin/cart.pl?db>>|photopolymers.dat|
> > Photoresist
> >
> > But at $85USD for a 50 foot roll that is
> > hardly in the "close to no cost" catergory
> > you mentioned when talking about the
> > stencils.
> >
> >
>
> 
>
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