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2004-05-12 by Dave Mucha
Hi all, As you know I have been searching for phenolic boards and am still looking. I did find some boards that are going for $10.00 for two including Priority mail. 8 x 12 x 1/16 Seems like a decent price. Should I keep looking ? Dave
2004-05-12 by Stefan Trethan
On Wed, 12 May 2004 18:59:15 -0000, Dave Mucha <dave_mucha@...> wrote: > Hi all, > > As you know I have been searching for phenolic boards and am still > looking. > > I did find some boards that are going for $10.00 for two including > Priority mail. 8 x 12 x 1/16 > > Seems like a decent price. > > Should I keep looking ? > > Dave I could get them mail order for eur3,35 a piece (200mmx300mmx1,5mm). 2,91each ich you buy 10. add 5 eur for shipping (but you can take as many as you want for still 5 eur). This is mail order, at ebay you should get WAY better prices. The prices are from conrad electronic, which is a mid-priced supplyer. You should get them cheaper somewhere. Why phenolic? for milling? ST
2004-05-13 by Dave Mucha
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@g...> wrote: > On Wed, 12 May 2004 18:59:15 -0000, Dave Mucha <dave_mucha@y...> > wrote: > > > Hi all, > > > > As you know I have been searching for phenolic boards and am still > > looking. > > > > I did find some boards that are going for $10.00 for two including > > Priority mail. 8 x 12 x 1/16 > > > > Seems like a decent price. > > > > Should I keep looking ? > > > > Dave > > > I could get them mail order for eur3,35 a piece (200mmx300mmx1,5mm). > 2,91each ich you buy 10. > add 5 eur for shipping (but you can take as many as you want for still 5 > eur). > > This is mail order, at ebay you should get WAY better prices. > The prices are from conrad electronic, which is a mid-priced supplyer. > You should get them cheaper somewhere. > > Why phenolic? for milling? > > ST Yes, I have a T-Tech machine and the FR- stuff dulls the expensive bits quickly. btw, I found out that two boards is just under the limit for one pound priority and each additional sheet is $3.00 plus shipping so we are close in price. Dave
2004-05-13 by Stefan Trethan
> Yes, > > I have a T-Tech machine and the FR- stuff dulls the expensive bits > quickly. > > btw, I found out that two boards is just under the limit for one > pound priority and each additional sheet is $3.00 plus shipping so we > are close in price. > > > Dave > Yea, for milling the phenolic seems much more useful... I guess you will not be able to knock much off the price for regular buy at a shop in small quantities. You might get it MUCH cheaper at ebay, or if you find someone getting rid of "old" stock elsewhere. I'm sure i bought my FR4 a big lot cheaper (there are also a few phenolic in there, i think, they are darker but i haven't checked for fibers....) ST
2004-05-13 by Dave Mucha
> I'm sure i bought my FR4 a big lot cheaper (there are also a few phenolic > in there, > i think, they are darker but i haven't checked for fibers....) > > ST odd, my origional stuff was pure white. I'm beginning to think it was not regular board material. Dave
2004-05-13 by Stefan Trethan
On Thu, 13 May 2004 17:44:29 -0000, Dave Mucha <dave_mucha@...> wrote: > >> I'm sure i bought my FR4 a big lot cheaper (there are also a few > phenolic >> in there, >> i think, they are darker but i haven't checked for fibers....) >> >> ST > > > odd, > > my origional stuff was pure white. I'm beginning to think it was not > regular board material. > > Dave Yes, there is white too. I have the impression the white stuff is much more brittle, with much more solid component, while the dark brown stuff seems to contain more resin. Especially the "1 layer of glass on each side and paper between" seems to be the white kind while the older material is more often brown. Have taken apart a lot of TVs etc. with light colored phenolic. Don't worry, you would have noticed if it were teflon ;-) ST
2004-05-13 by Dave Mucha
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@g...> wrote: > On Thu, 13 May 2004 17:44:29 -0000, Dave Mucha <dave_mucha@y...> > wrote: > > > > >> I'm sure i bought my FR4 a big lot cheaper (there are also a few > > phenolic > >> in there, > >> i think, they are darker but i haven't checked for fibers....) > >> > >> ST > > > > > > odd, > > > > my origional stuff was pure white. I'm beginning to think it was not > > regular board material. > > > > Dave > > > Yes, there is white too. > I have the impression the white stuff is much more brittle, with much more > solid component, > while the dark brown stuff seems to contain more resin. > Especially the "1 layer of glass on each side and paper between" seems to > be the white > kind while the older material is more often brown. > Have taken apart a lot of TVs etc. with light colored phenolic. > > Don't worry, you would have noticed if it were teflon ;-) > > ST What does Teflon look like ?
2004-05-13 by Stefan Trethan
> > What does Teflon look like ? > > I would expect like teflon ;-). white, flexible, very slippery surface, overall a very distinct experience. You can easily tell which is teflon from 10 samples even if you never have touched any before. I have never seen or touched a teflon PCB, so the above is assumption, i have only experience with teflon plate. But i am very confident that i would be able to tell instantly if i see it. ST
2004-05-13 by Kevin Lavigne
Hi Dave,
Check this out: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4660&item=3814427354
He's selling FR4 but says to ask if you need something else, might be worth the effort to ask............
Have a great day,
Kevin ----- Original Message -----
From: Dave Mucha
To: Homebrew_PCBs@yahoogroups.com
Sent: Thursday, May 13, 2004 12:40 PM
Subject: [Homebrew_PCBs] Re: is $10.00 for two sheets a good price ?
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> On Wed, 12 May 2004 18:59:15 -0000, Dave Mucha <dave_mucha@y...>
> wrote:
>
> > Hi all,
> >
> > As you know I have been searching for phenolic boards and am still
> > looking.
> >
> > I did find some boards that are going for $10.00 for two including
> > Priority mail. 8 x 12 x 1/16
> >
> > Seems like a decent price.
> >
> > Should I keep looking ?
> >
> > Dave
>
>
> I could get them mail order for eur3,35 a piece (200mmx300mmx1,5mm).
> 2,91each ich you buy 10.
> add 5 eur for shipping (but you can take as many as you want for
still 5
> eur).
>
> This is mail order, at ebay you should get WAY better prices.
> The prices are from conrad electronic, which is a mid-priced
supplyer.
> You should get them cheaper somewhere.
>
> Why phenolic? for milling?
>
> ST
Yes,
I have a T-Tech machine and the FR- stuff dulls the expensive bits
quickly.
btw, I found out that two boards is just under the limit for one
pound priority and each additional sheet is $3.00 plus shipping so we
are close in price.
Dave
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[Non-text portions of this message have been removed]2004-05-13 by JanRwl@AOL.COM
In a message dated 5/13/2004 2:36:19 PM Central Standard Time, dave_mucha@... writes: What does Teflon look like ? Skim milk, only solid. [Non-text portions of this message have been removed]
2004-05-13 by Dave Mucha
--- In Homebrew_PCBs@yahoogroups.com, JanRwl@A... wrote: > In a message dated 5/13/2004 2:36:19 PM Central Standard Time, > dave_mucha@y... writes: > What does Teflon look like ? > Skim milk, only solid. I think that was what I had. wasted two sheets playing around with the T-Tech machine. Oh well, live and learn. Dave
> > > [Non-text portions of this message have been removed]
2004-05-13 by Stefan Trethan
> I think that was what I had. > > wasted two sheets playing around with the T-Tech machine. > > Oh well, live and learn. > > Dave > > I still doubt it.. Was it really white like milk? ST
2004-05-13 by Dave Mucha
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@g...> wrote: > > > I think that was what I had. > > > > wasted two sheets playing around with the T-Tech machine. > > > > Oh well, live and learn. > > > > Dave > > > > > > I still doubt it.. > Was it really white like milk? Yup, I'll post some pics when I get back from my girls softball. Dave > > ST
2004-05-14 by Dave Mucha
> > > > > > > I still doubt it.. > > Was it really white like milk? > > Yup, > > I'll post some pics when I get back from my girls softball. > > Dave > > > > > > > ST photos section under daves dr...... teh last two photos. one shows a couple boards on the back of single sided material the other shows dim lighting of a board on a pair of jeans. VERY white boards. The think I liked best was that I could peal the copper off in large sections. Using a PCB router takes a long time to remove copper from the board. Dave . . .
2004-05-14 by lists
In article <opr7yc8hqfooawdc@...>, Stefan Trethan <stefan_trethan@...> wrote: > > What does Teflon look like ? > > > > > I would expect like teflon ;-). > white, flexible, very slippery surface, overall a very distinct > experience. You can easily tell which is teflon from 10 samples even if > you never have touched any before. It is usually only used for Rf circuits (UHF and above) because of it's favourable dielectric properties. It is /horrendously/ expensive. It does not look white when used as a PCB material, brownish really but the colour is difficult to to describe. The surface texture, however is quite unique - and also difficult to describe. Stuart.