Re: [Emc-users] Vacuum table Re: Yet another topic about gantry homing

[Dave Cole]

Instead of making bearings I would look at what Igus and others have to 
sell.

They are not that expensive and you have plenty of other things to do.
Regenerative Vacuum blowers work well for vacuum hold down work.    They 
are still power hogs and quite noisy without mufflers on the outputs.
They are sometimes sold on Ebay for not much since few people know what 
they are.


Dave



On 10/7/2018 6:31 PM, Leonardo Marsaglia wrote:

Hello Gregg,

Something like this is what you have in mind?

http://www.phoenixcnccreations.com/our_shop_gallery/Vacuum%20System/2%20vac%206%20zone%20plenum_ball%20valves4.jpg

It's a nice feature, and seems cheap and not hard to implement. That's
probably the way I'll do it.

El sáb., 6 oct. 2018 a las 18:07, Gregg Eshelman via Emc-users (<
emc-users@lists.sourceforge.net>) escribió:


You could make the vacuum table with several zones, connected with a PVC
pipe manifold and ball valves to close off sections you're not using. That
would be easier than keeping stuff around to lay over unused sections of
the table.

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[Emc-users] Vacuum table Re: Yet another topic about gantry homing

[Roland Jollivet]

I think this way

is better.
You can model the zones on typical board sizes you would use, or as on
plotters, commonly used paper page sizes.

https://www.google.com/imgres?imgurl=https%3A%2F%2Fi.ytimg.com%2Fvi%2Fh9jb-qMUuCE%2Fmaxresdefault.jpg=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dh9jb-qMUuCE=tzWNl21hLNV6FM=ZlxEJVnEj7T1CM%3A=10ahUKEwjqr47mkfbdAhWsJcAKHRyECSwQMwh3KDMwMw..i=1280=720=firefox-b-ab=805=1600=vacuum%20table%20plotter%20zones=0ahUKEwjqr47mkfbdAhWsJcAKHRyECSwQMwh3KDMwMw=mrc=8





On Mon, 8 Oct 2018 at 00:33, Leonardo Marsaglia 
wrote:

> Hello Gregg,
>
> Something like this is what you have in mind?
>
>
> http://www.phoenixcnccreations.com/our_shop_gallery/Vacuum%20System/2%20vac%206%20zone%20plenum_ball%20valves4.jpg
>
> It's a nice feature, and seems cheap and not hard to implement. That's
> probably the way I'll do it.
>
> El sáb., 6 oct. 2018 a las 18:07, Gregg Eshelman via Emc-users (<
> emc-users@lists.sourceforge.net>) escribió:
>
> > You could make the vacuum table with several zones, connected with a PVC
> > pipe manifold and ball valves to close off sections you're not using.
> That
> > would be easier than keeping stuff around to lay over unused sections of
> > the table.
> >
> > ___
> > Emc-users mailing list
> > Emc-users@lists.sourceforge.net
> > https://lists.sourceforge.net/lists/listinfo/emc-users
> >
>
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Re: [Emc-users] Vacuum table Re: Yet another topic about gantry homing

[Gregg Eshelman via Emc-users]

Pretty much exactly that. Plastic ball valves for PVC water pipe would be 
cheaper, unless you're building a table for heavy industrial use and will be 
turning the valves a large number of times per year. 

On Sunday, October 7, 2018, 4:34:21 PM MDT, Leonardo Marsaglia 
 wrote:  
 
 Hello Gregg,

Something like this is what you have in mind?

http://www.phoenixcnccreations.com/our_shop_gallery/Vacuum%20System/2%20vac%206%20zone%20plenum_ball%20valves4.jpg

It's a nice feature, and seems cheap and not hard to implement. That's
probably the way I'll do it.

El sáb., 6 oct. 2018 a las 18:07, Gregg Eshelman via Emc-users (<
emc-users@lists.sourceforge.net>) escribió:

> You could make the vacuum table with several zones, connected with a PVC
> pipe manifold and ball valves to close off sections you're not using. That
> would be easier than keeping stuff around to lay over unused sections of
> the table.  
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Re: [Emc-users] Vacuum table Re: Yet another topic about gantry homing

[Leonardo Marsaglia]

Hello Gregg,

Something like this is what you have in mind?

http://www.phoenixcnccreations.com/our_shop_gallery/Vacuum%20System/2%20vac%206%20zone%20plenum_ball%20valves4.jpg

It's a nice feature, and seems cheap and not hard to implement. That's
probably the way I'll do it.

El sáb., 6 oct. 2018 a las 18:07, Gregg Eshelman via Emc-users (<
emc-users@lists.sourceforge.net>) escribió:

> You could make the vacuum table with several zones, connected with a PVC
> pipe manifold and ball valves to close off sections you're not using. That
> would be easier than keeping stuff around to lay over unused sections of
> the table.
>
> ___
> Emc-users mailing list
> Emc-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/emc-users
>

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[Emc-users] Vacuum table Re: Yet another topic about gantry homing

[Gregg Eshelman via Emc-users]

You could make the vacuum table with several zones, connected with a PVC pipe 
manifold and ball valves to close off sections you're not using. That would be 
easier than keeping stuff around to lay over unused sections of the table.

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