[Swansea Hackspace] CNC Mill Progress

[Ceri Clatworthy]

What about making a PCB with NO copper ...

So it mills the sacrificial board smooth .. needs to be a PCB as big /
bigger than normal ..

or you could add ( NOT remove) an 'L' in the corner, so this is HOME !!

Ceri.

By the way, we used to use acrylic as our sacrificial board .

:)

On Wed, Oct 29, 2014 at 10:52 AM, Justin Mitchell <
justin at swansea.hackspace.org.uk> wrote:

> On Wed, 2014-10-29 at 10:48 +0000, Ian Bullfrog wrote:
> > dimensions for wood for mill?
> > my friend works in forest timber and there are some large/solid,
> > composite wooden girder parts, ie
> >
> > 10-20 cm thick, and about 30-40cm wide and well over a metre long
>
> Its only a little desktop machine, the bed is probably about 200x300mm
>
> Probably just looking for an offcut of wood about 150mm square about
> 10mm or so thick, that we can mill the top off to level the machine,
> then mount PCBs to it.
>
> I have seen suggestions that MDF is bad because of the fine dust,
> although someone (sorry i forgot who) donated an old vacuum cleaner to
> use with it.
>
> Now if i can just find something to generate sane gcode under linux, the
> inkscape gcodetools generated stuff that looked sane in the visualiser,
> but when you ran it went awol. FlatCAM does the PCB gcode nicely, but
> that doesnt help milling a flat bed.
>
>
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