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Subject: Re: RE : [Homebrew_PCBs] New paper for TT! Reynolds Parchment Paper

From: KD5NWA <KD5NWA@...>
Date: 2005-05-26

I use silver color Laser Foil to label the component side, it's really not
silver color, but more an aluminum color but it works for it's intended
purpose. I bought several rolls at Digi-Key, they were discontinuing it and
it was $3.49 for a roll that is aproximatly 300 feet. I bought several in
silver and several in green.

Has anyone used it to make a solder mask?

Where is the database that you mentioned? Is it at the Pulsar site?

At 07:42 AM 5/26/2005, you wrote:
>The Reynolds Parchemnt Paper may also be called Butcher's paper or
>Baker's paper. Originallly these were wax coated paperrs, but in
>today's environment, silicones are generally used. Lower cost and
>more eco friendly.
>
>I am using a GBC laminator. (not GLC, it was very late last night).
>I bought one of the 4" wide ones at Staples Office supply for under
>$50. My boards come from the free EAGLE CAD package which limits the
>size to 3" x 4". Perfect for my use. I swapped the gears in it per
>the Pulsar instructions to slow it down a bit. Though with the RPP,
>I don't think I had to. Staples was discontinuing a 9" home version
>for $40 the last time I looked.
>
>There are a lot of good sites with step by step instructions on
>Toner Transfer.The basic concept is the toner used in a laser
>printer is a meltable plastic. The image created with the toner is
>transferred to a paper sheet and then remelted or fused. This paper
>can then be used to re-transfer the image to another substrate by
>ironing. Crafters have used this for years to transfer photocopied
>design to fabric and wood. For pcb making, you need to transfer 100%
>of the toner, which acts as the resist during etching. It's also
>good for component legends on the top. Most papers require a water
>wash and scrub step to wash off the paper and leave the toner.After
>etching the toner is removed.There is a new(?) step being added. For
>those of you who were alive before inkjet printers, one way to get
>color, especially metallic, was to use a heat sealable foil,
>commonly called Laser Foil. It was a mylar tape with a metallized
>coating that would adhere only to the toner.Great for gold seals
>etc. For pcb's the Laser foil provides both color and an extra
>smooth and durable coating to the toner resist.
>
>The correct combination of paper/ toner/ laseer printer is critical
>for success. There is info in the database on different combinations
>that have worked and not worked. Check it out.
>
>Hope this helps,
>
>
>Mycroft2152
>
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>Be sure to visit the group home and check for new Bookmarks and files:
>http://groups.yahoo.com/group/Homebrew_PCBs
>Yahoo! Groups Links
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>

Cecil Bayona
KD5NWA
www.qrpradio.com

'Never argue with an idiot. They drag you down to their level then beat you
with experience.'