I need to cut a V channel in some brass. How well does it work with carbide
bits and or table saw blades. I've done lots of aluminum but I know that is
much softer than brass. Any help and or experience you have would be
greatly appreciated
> I need to cut a V channel in some brass.
What's "brass" ? It comes in all sorts of grades, from soft to hard.
Hard brass (rolled etc.) can be really hard work to machine like this.
For some of the alloys (especially BeCu) then I'd run a mile from this
sort of lash-up.
> How well does it work with carbide
> bits and or table saw blades.
Badly. I wouldn't rout it. I _really_ wouldn't unless I could run my
router very slowly. I'd think about it with something like an overhead
router and leadscrews to feed the stock into the cutter.
And I've never liked machining something with dust-like conductive
fragments coming off it and a poorly sealed motor nearby.
If you have to cut this on a circular saw, then this is definitely
time to get a blade with negative rake on the teeth. They're easy to
get - the door & window fitting trade use them.
On the whole, go to it. But turn that cutter slowly and make sure that
the workpiece is clamped down firmly. Feeding a hand-held cutter into
brass would give me conniptions.
Personally I'd probably reach for a file.
Ed Angell
"Damned if i know" <q...@bls.com> wrote in message
news:yX9Ac.738511$Pk3.230821@pd7tw1no...
I've cut brass on a variable speed band saw and a slow speed miniature table
saw with good results. I've used a Dremel in a miniature drill press to
mill designs. BUT ONLY AT LOW CUTTING SPEED. If your router has -- or can
be attached to -- a speed control, then go for it with a carbide blade. You
might also conisder mounted, shaped stones of the type usually used in "die
grinders".
Norm
router bits are designed to cut wood at high rpms. if you slow the
tool down it becomes easy to overfeed the material into it- that big
gullet designed to clear sawdust will allow the tool to grab a big
bite and kick that bit of brass in a nasty way.
however, there are cutters designed for metal that will fit your
router's collet. go to a machinists' supply house and ask there. they
will be able to sell you the appropriate cutter and advise you as to
the proper speed to run it and what lubricant to use.
--
http://members.tripod.com/mikehide2
<bri...@thanks.com> wrote in message
news:19p3d0h8st3ln300c...@4ax.com...
>You know they make machine tools to do work on metals .....mjh
No sense wasting so much time on such a stupid question. I'd suggest
he try it and let us know ...when he gets out of the hospital. It
sounds more like a troll than a troll.
Bill.
Charlie
>Only stupid people don't ask questions and even stupider assholes
>ridicule questions
Be tolerant of the short-fuzed, for their patience is sorely tried by
the abundance of genuine trolls.
> I have never seen another one; it
> was definitely pre 1940. If someone came out with one today, I would buy
> one.
I've see an add-on in a recent catalog for the Jet 14" BS, to make it
into the multi-speed metal/wood type.
--
Sending unsolicited commercial e-mail to this account incurs a fee of
$500 per message, and acknowledges the legality of this contract.
You can see mine here; http://billpounds.com/woodshop/bandsaw.html
Yes, you can buy that saw today. Spendy though, as bandsaws go.
--
Bill Pounds
http://www.billpounds.com/woodshop
"Dave W" <wood...@suscom-maine.net> wrote in message
news:Jt-dnd1lw4I...@suscom-maine.net...
You know, the attitude you're showing isn't helping anything. Usenet
requires a thick skin; if you're going to get all shook up by one person
saying you're trying something stupid or whatever they said, you won't
enjoy it here much.
Blow off the useless answers; ranting about it (in two messages now)
doesn't get you anywhere good.
The key thing is that the blade teeth have a negative hook angle, that
is, the tooth faces are pointed a little bit backwards. Woodworking
blades have positive hook angles, which would cause brass to be pulled
into the blade as you cut. That wouldn't be a lot of fun.
I'd be afraid of using router bits for this very reason.
Metal-cutting end-mills would probably work in a router, but you're
limited in geometry to flat end and ball nose cutters. Something like
a carbide single flute countersink cutter
(https://www.travers.com/pdfshow.asp?p=91) might give you the
V-channel you're looking for. The 1/4" size would chuck into a 1/4"
collet in a router, and it's rated speed for cutting brass would be
about 10,000 rpm. These may not be able to cut a sharp V at the tip
since countersinks aren't designed to do that, however.
Good luck,
Tim
"Damned if i know" <q...@bls.com> wrote in message news:<yX9Ac.738511$Pk3.230821@pd7tw1no>...
The General 590 bandsaw
(http://www.general.ca/product/general/590an.html) has a gearbox with
a shift lever for high and low range and step pulleys for four speeds
in each. (It's also a beautifly finished piece of machinery.)
Tim
That's not what I said, I said you need to not be so damn touchy.
The guy who told you you were proposing something stupid wasn't
being a troll, he was pointing out something that he felt was important.
You can choose to play a "who is grumpier than who" game, but that
doesn't make him a troll.
If you respond like this to everyone who tries to give you advice
_that you asked for_, you'll find that nobody will answer your questions.