RE: Vacuum table

Mr. Scalione and list,

I just put some building "plans" on the Larken_CNC list. It is targeted
towards a 40" X 40" CNC router. Benefits include low cost and low profile
(to help preserve precious Z axis travel) and fairly quick construction.
You have to be a member of the Larken_CNC list to read, but I hope it is
worth it. Actually, the list is general enough for ANYBODY who has a CNC
router.

http://groups.yahoo.com/group/Larken_CNC/join

You can find the "plans" with picture here.

http://groups.yahoo.com/group/Larken_CNC/message/35

Thanks,

Bruce Clark

--- In CAD_CAM_EDM_DRO@y..., "William Scalione" <wscalione@n...> wrote:
> Anyone out there ever built a vacuum table for a cnc router? I am
> in the process of building a new larger router and would like to add
> a vacuum part hold down to it. I picked up a couple of vacuum pumps
> at the NC State University surplus today although I am not sure if they
> will work for it yet. They are nice units direct drive high vacuum lab
> units. What I need to know is what size and number of holes would
> I drill in a 4' X 4' table? I will probably add some valves to section
> the table off, possibly go back and get another pump and section it
> into thirds, one pump for each section. Use only the sections I need
> to, depending on the size fo the work. I was thinking of using an acrylic
> sheet maybe 3/4" thick for the table. Will it require a large O-Ring
> around the edge or will just the holes be sufficent? Any tips would be
> appreciated.
>
> Thanks
> Bill