We got a fairly high end lumber yard here in town and turns out they carry 1/4" MDF for about $21 pre 4x8 sheet. When I get ready I will give that a try. Also want to see what is available at the local art supply they may have some poster board that would work well.
Craig
--- In Homebrew_PCBs@yahoogroups.com, "Zoran A. Scepanovic" <zastos@...> wrote:
>
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> On 13.Feb.11 20:11, designer_craig wrote:
> > I am about to build a vacuum table to hole down the blank stock when I cnc drill my boards. I am looking some low cost sacrificial material to use between the board and the vacuum table.
> >
> > The material needs to be thick enough so as not to drill into the vacuum table and be some what porous to allow air diffusion for a good vacuum grip.
> >
> > The ideal material would be something like 1/16" thick MDF. I have heard MDF is fairly porous. I have only seen MDF in 1/2 and 3/4" thickness. Possilble some sort of construciton paper or cardboard. Guess I need to do some experiments.
> >
> > Anyone got and good ideas?
> >
> > Craig
> >
>
> You should be able to find 1/4" MDF, just mask the unused MDF.
>
> - --
> Best Regards,
> Zoran A. Å ÄepanoviÄ
> zastos@...
> http://zastos.com
> +381 63 609-993
>
> =====
>
>
> Never let anyone drive you crazy when you know it's within walking distance.
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