Homebrew PCBs

Hi John,

Light brown?  On the un-clad side?  Is it G10?  Can you see the glass
strands, looks like a weave when you machine it?  I can get single or
double sided board here for $0.02 (two cents) a sq in.  That would be
$0.48 for the board you mention.  Looks a little GREEN after you machine
(or etch) the copper off.  Phenolic is BROWN.  Chips are slightly
yellow-ish.  I believe FR4 is blue?

Alan  KM6VV
 

crankorgan wrote:
> 
> Hi Alan,
>         The board I am using costs $2 for a 4" X 6".  I suspect
> there is a better board out there. The board I use is a light
> brown color.
> 
>                                       John
> 
> --- In Homebrew_PCBs@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> > Hi John,
> >
> > I guess I'll have to do that.  I've used cardboard baffles to keep
> brass
> > and aluminum dust/chips down, they normally just collect beside the
> mill
> > in the tray the mill sits in.  I got a STACK of dust (and some blew
> > around) from a PCB the size of a QUARTER!
> >
> > What do you think of Phenolic board?  Can you use it?  MUCH
> cleaner, and
> > nicer on endmills!
> >
> > I'm also thinking I might set up a small "hand vacuum" to keep THIS
> dust
> > down.
> >
> > Alan  KM6VV
> >
> >
> > crankorgan wrote:
> > >
> > > Hi Alan,
> > >         I put a wall of masking tape around the edge of the
> > > PVC bed. This keeps the dust from vibrating off the bed into
> > > the leadscrews. Since I went back to 16,000 RPMs the dust
> > > is not so bad. The best fix is to put 5 drops of motor oil
> > > on the board. Spread it around with your fingers. This will
> > > cut down most of the dust. Then wash the board with dawn
> > > dish detergent.  If you think that dust is bad,try sanding,
> > > cutting and shaping MDF wood. Then some PVC! I have it
> > > everywhere!
> > >
> > >                                 John
> > >
> > > --- In Homebrew_PCBs@y..., Alan Marconett KM6VV <KM6VV@a...>
> wrote:
> > > > Hi Listies,
> > > >
> > > > I had the opportunity to mill some more PCB material this last
> > > weekend.
> > > > Phenolic and G10 Gass Epoxy.  Boy does the G10 make nasty dust!
> > > John,
> > > > how can you stand it!  I had been cutting up scrap phenolic for
> > > testing,
> > > > but ran out.
> > > >
> > > > And I think I just discovered something, if phenolic board is OK
> > > for the
> > > > circuits you want to do, the cutters PROBABLY won't get DULL
> nearly
> > > as
> > > > fast!  And it's a lot cleaner.  I LOVE G10 and FR4, but maybe
> I'll
> > > try
> > > > to find some more phenolic board (single sided is fine)!
> > > >
> > > > Alan  KM6VV