Homebrew PCBs

The Puretch pricing is here:

  http://www.capefearpress.com/order.html

and with shipping the results are, in USD$:

  Square feet    US   Canada   Elsewhere

    2           $19
   20           $59    $69      $86
  100          $226   $238     $255

They are marketing a film "originally designed for PCB manufacturing":

   http://www.capefearpress.com/puretchpcb.html

So I guess this is Riston or some equivalent material.  Perhaps the
24.75 inch (628 mm) width of the material they sell would be a clue as
to its real nature.

The Riston MM540 I bought from eBay is still available from the same
source in the Czech Republic:

  http://www.tech-place.com/pyralux/23-photosensitive-film.html

318 x 2000mm.  This is a good quantity for my needs.  An advantage of
this is that I know exactly what the material is.  The datasheet and
processing instructions are here:


http://www2.dupont.com/Imaging_Materials/en_US/tech_info/product_selector.html


  - Robin