"Lloyd N. Johnson" wrote:
> I don't want to sound too critical here, but this sounds like mythology to
> me. Are you saying a router cannot stop and change directions without
> creating some kind of problem? I have been working with board vendors for
> 20 years and no vendor ever told me anything
> Geoff Harland wrote:
>
> > And to expand a bit on that request, do you have a viewpoint on the
merits
> > of using Gerber arc commands versus "software" arc commands, in the
event
> > that the details of routing a PCB are provided in Gerber file format?
(This
> > assumes that the PCB manufacture
Geoff Harland wrote:
> And to expand a bit on that request, do you have a viewpoint on the merits
> of using Gerber arc commands versus "software" arc commands, in the event
> that the details of routing a PCB are provided in Gerber file format? (This
> assumes that the PCB manufacturer can handl
Message text written by Hamid
>It is a bad idea to use an inside radius same as your router bit radius.
This
requires the router to come to a complete stop and then start moving at 90
degrees. There will invariably be some chatter and the router will cut
into the
sides. It is better to make a m
On 09:52 AM 2/15/01 -0800, Hamid A. Wasti said:
>Andrew J Jenkins wrote:
>
> > I'd still like to know some more specifics regarding optimizing this new
> > rule. My 31's DO live a much shorter life than the 62's, on average,
> and I'm
> > sure everyone else would ultimately benefit from the infor
Hi Lloyd,
While I can't speak from direct experience that this is true in the board
manufacturing industry, it certainly is true in the metal machining
industry. We manufacture photoplotters to very tight tolerances using
highly accurate CNC machine tools. Any time a radius is required, we insu
"Lloyd N. Johnson" wrote:
> Message text written by Hamid
> >It is a bad idea to use an inside radius same as your router bit radius.
> This
> requires the router to come to a complete stop and then start moving at 90
> degrees. There will invariably be some chatter and the router will cut
> i
"Lloyd N. Johnson" wrote:
> I don't want to sound too critical here, but this sounds like mythology to
> me. Are you saying a router cannot stop and change directions without
> creating some kind of problem? I have been working with board vendors for
> 20 years and no vendor ever told me anything
Perhaps I should read ahead, instead of popping in so quickly. I see that
Mr. Wasti has at least partially answered my questions (under the subject
of Optimum Routing inside radius, was: Rectangle holes):
At 09:52 AM 2/15/01 -0800, Hamid A. Wasti wrote:
>...
>It is a fact of life that the smal
if space allows why not just overshoot a bit in the corners, then a
rectangular part can fit snugly, I've done this.
Dennis Saputelli
Andrew J Jenkins wrote:
>
> On 09:52 AM 2/15/01 -0800, Hamid A. Wasti said:
> >Andrew J Jenkins wrote:
> >
> > > I'd still like to know some more specifics regard
Andrew J Jenkins wrote:
> I'd still like to know some more specifics regarding optimizing this new
> rule. My 31's DO live a much shorter life than the 62's, on average, and I'm
> sure everyone else would ultimately benefit from the information too. A rule
> is only useful if its substance can be
Brad Marshall wrote:
> Hello,
> I have a person here that wants a 50mil X 250mil rectangle plated
> through hole. I am having trouble figuring out the best way to do this
> with Protel so that the board house will know what I want. Any
> suggestion/comments are appreciated.
You'd better cont
> On 11:03 AM 2/12/2001 -0800, Hamid A. Wasti wrote:
>
> > It is a bad idea to use an inside radius same as your
> > router bit radius. This requires the router to come
> > to a complete stop and then start moving at 90
> > degrees. There will invariably be some chatter and
> > the router will cut
great tip, I never realized that!
thanks
Dennis Saputelli
"Hamid A. Wasti" wrote:
> It is a bad idea to use an inside radius same as your router bit radius. This
> requires the router to come to a complete stop and then start moving at 90
> degrees. There will invariably be some chatter and th
Brad Velander wrote:
> a typical shop might have a 32mil diameter
> router as their smallest size
> router bit and therefore your corners will have a 16mil radius.
It is a bad idea to use an inside radius same as your router bit radius. This
requires the router to come to a complete stop and th
Brad,
here is the methodology that I have applied to such a problem
previously with good results (no fab shop ever got it wrong).
On your board the copper pattern is no problem because you can have
square or rectangular pads or fills. Specify the hole in your pad to be very
small (
Hello,
I have a person here that wants a 50mil X 250mil rectangle plated
through hole. I am having trouble figuring out the best way to do this
with Protel so that the board house will know what I want. Any
suggestion/comments are appreciated.
Thanks,
Brad Marshall
* * * * * * * * * * * * * *
23 matches
Mail list logo
