Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "jdizzlemynizzal" 
<jdizzlemynizzal@...> wrote:
>
> --- In Homebrew_PCBs@yahoogroups.com, "adastra_2001"
> <adastra_2001@> wrote:
> >
> > --- In Homebrew_PCBs@yahoogroups.com, "derekhawkins" <eldata@> 
> > wrote:
> > >
> > > >Are there any free or low cost (<$300) PCB/Schematic
> > > >programs that have part libraries of tubes? 
> > > 
> > > Looks like there are some Eagle shared user tube related 
libraries 
> > > here;
> > > 
> > > http://www.cadsoftusa.com/download.htm
> > > 
> > > Follow the Libraries link.
> > > 
> > > --- In Homebrew_PCBs@yahoogroups.com, "adastra_2001" 
> > > <adastra_2001@> wrote:
> > > >
> > >I thank you for the link regarding Eagle Libraries. I have 
> > downloaded them and I will try them. As far as the reluctance to 
make 
> > my own library parts, yes that has a little to do with it as well 
as 
> > the difficulty for me to make the physical measurements needed 
for a 
> > tube socket that will work in a PCB program.
> >
> 
> Simple measurement technique:
> Take a bottle of ink and place on leads of tube. Take a piece of 
paper
> and blot the tube down on to it. Creating the part really isnt that
> hard its just annoying, which is the next step: Take whatever you 
use
> to measure angle degrees and write down the degrees. Then measure 
the
> radius of 1 pin on one side to the other side. Enter the left pin as
> negative and the right pin as positive. Remember to set the origin 
as
> 0,0 for a the middle, invisible, refrence pin. A free program called
> ProgeCAD will let you enter data like this, just remember to enter a
> negative angle when going clockwise. Save as DXF or whatever and 
then
> import. Its REAL simple and will save you 300 dollars. The whole
> process should take only about 30 minutes.
> If you get the numbers for me I could make the DXF file for you
> (free), then you will just have to import it to whatever program 
your
> using.
>
Thanks for the method. I will keep this email. At present, I don't 
have a set of calipers (my boss lost the one I loaned him) and I need 
to order more of the sockets.