[chbot] milling/routing PCB's.

Wed, 25 Apr 2007 08:04:07 +1200

I know its revisiting an old thread, but just opened the new=20
=46arnell catalog to page 1451.

Tungsten Carbide Router Bits=20
=46rom 0.5mm to 3.175mm=20
Starting at $11.80+GST up to 29.10+GST

Mike

On Friday 13 April 2007 11:57, Chris Hellyar wrote:
> Hmmm,
>
> They do have a .2mm 2 flute cutter for $78.31 though,
> which might do the job, me thinks I'll have to have a bit
> of a think about that, it'd certainly last the distance,
> and has a 3mm shank which would fit the dremel..  Hmmmm.
> :)
>
> FYI, this was my first attempt with a hand ground 'V' bit
> made from a broken off 3mm drill shank.  Mucho-messy
> cutting. :-).
>
> http://ohmark.co.nz/testpcb.jpg
>
> The spacing etc. is right, but my home brew cutter was
> more used more of a tearing action than a cutting one!  I
> also had some issues with dwell cycle time in the holes,
> so they are a bit out, but that was just a setting I
> missed in the conversion process.
>
> I'll have to find a cheap source of laminate as well I
> suppose, but I'll get the process and tooling sorted
> first!
>
> Cheers, Chris H.
>
> > Hi Chris,
> > I think you may find it a lot cheaper to import.
> >
> > Trade Tools have 0.5mm 2 flute end mills but they are
> > $140 each.
> >
> > Go to "www.tradetools.co.nz" and select browse only,
> > it's not all that obvious on the home page.
> >
> > this link may take you directly to them
> > "http://www.tradetools.co.nz/cgi-bin/?E4TRANSID=3DgxbbRKx
> >ZcBrt8pap7coRrpp8xapxqJIg&TARGETPGM=3DTTLWLCCL&MODE=3D*LIST&
> >CLASS=3DILS"
> >
> > otherwise do a key word search on "carbide"
> >
> > Regards,
> > Robin
> >
> >
> >
> >
> >
> >
> > Chris Hellyar <chris@trash.co.nz>
> > Sent by: chchrobotics-admin@lists.linuxnut.co.nz
> > 12/04/2007 09:25 p.m.
> > Please respond to
> > chchrobotics@lists.linuxnut.co.nz
> >
> >
> > To
> > chchrobotics@lists.linuxnut.co.nz
> > cc
> >
> > Subject
> > Re: [chbot] milling/routing PCB's.
> >
> >
> >
> >
> >
> >
> > Not that I've seen...
> >
> > Going through the dremel catalogue and info I could
> > find on the web there are only a few carbide bis, and
> > no really fine engraving tools in there..
> >
> > The problem with PCB's (which is kinda obvious) is that
> > you're cutting through copper, which work hardens as
> > you cut it, into fibreglass which is hell on tools as
> > well.  Carbide is the way to go from what I've read. I
> > can import some from the US, but I'm all for finding a
> > local supplier if possible.
> >
> > Cheers, Me.
> >
> > On Thu, 2007-04-12 at 21:02 +1200, Andrew Errington=20
wrote:
> >> I don't suppose there is a specific Dremel bit you
> >> could use?
> >>
> >> A
> >>
> >> On Thu, 12 Apr 2007 20:43, you wrote:
> >> > Yeah, if it's not too much trouble...
> >> >
> >> > I've built a small junk-box cnc router as a learning
> >> > tool on the way
> >
> > to
> >
> >> > building a large one, and thought it'd be
> >> > interesting to play with milling PCB's..
> >> >
> >> > The info I can find on the web refers to specific
> >> > engraving tools to use, but I've struck out trying
> >> > to source them locally.
> >> >
> >> > I got vaguely OK results with a hand ground tool,
> >> > but because it was made of high speed steel and not
> >> > carbide, it only lasted about 1/4 of the way through
> >> > a very small PCB.  (One 14 pin IC and a connector,
> >
> > test
> >
> >> > layout)
> >> >
> >> > Cheers, Me.
> >> >
> >> > On Thu, 2007-04-12 at 07:30 +1200, Michael Pearce=20
wrote:
> >> > > I have had boards milled, and have seen one
> >> > > running.
> >> > >
> >> > > The mill bits they used were only readily
> >> > > available from the machine manufacturer.
> >> > >
> >> > > I can find out more if you want.
> >> > >
> >> > > Mike
> >> > >
> >> > > On Wednesday 11 April 2007 21:12, Chris Hellyar=20
wrote:
> >> > > > Anyone on the list currently, or has in the past
> >> > > > played around with milling their own PCB's?
> >> > > >
> >> > > > Curious about tooling you might have used...
> >> > > >
> >> > > > Oh, and 'gidday..  (Seeing as I don't post to
> >> > > > lists much these days. :)
> >> > > >
> >> > > > Cheers, Me.
> >> > > >
> >> > > >
> >> > > > _______________________________________________
> >> > > > Chchrobotics mailing list
> >> > > > Chchrobotics@lists.linuxnut.co.nz
> >> > > > http://lists.ourshack.com/mailman/listinfo/chchr
> >> > > >obotics
> >> >
> >> > _______________________________________________
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> >> >ics
> >>
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