[Swansea Hackspace] CNC Mill Progress

[Graham Owens]

I dont know about the FR2/FR4 difference, I just use whatever I have to
hand.   Just done a couple of boards on FR4 160x100, then realised that the
reason that board size doesnt matter (so i used standard 160x100) is
because i have a band saw with fine pitch teeth, and just cut out my boards
when they are done, therefore the board size really doesnt matter to me.
But i dont think the hackspace has any tools suitable for cutting 'bits'
out of an over size pcb.  perhaps some golden ratio sizes
http://dangerousprototypes.com/docs/Sick_of_Beige_standard_PCB_sizes_v1.0

We also machine some acrylic to make the covers as in the pictures.


On 29 October 2014 14:58, Justin Mitchell <justin at swansea.hackspace.org.uk>
wrote:

> On Wed, 2014-10-29 at 14:49 +0000, Graham Owens wrote:
> > I would suggest a board a bit bigger than 160mm in each direction so
> > that you have abed that can handle standard 100x160 pcb.  Also I can
> > write you some gcode by hand for flattening, it's a doddle to do
> > simple stuff like that.
>
> I had been considering buying a small stock of copper clad boards in so
> that there would be some to hand when people wanted it, but its sold in
> so many sizes i was having trouble figuring out what would be the best
> to go for.
>
> I also read that FR2 board is considered better for milling, as its
> easier to work than the now more common FR4 fibreglass boards.
>
>
> _______________________________________________
> Hackspace mailing list
> Hackspace at swansea.hackspace.org.uk
> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://swansea.hackspace.org.uk/pipermail/hackspace/attachments/20141029/a2fad151/attachment.html>