Vacuum table Setup Advice

[andy_con]

Ok cool

Are these any good

http://www.clampusystems.com/Venturi.html

Some claim 90% odd vacuum

Not saying they are a perfect solution but are they worth considering if you have a big enough compressor?

[JAZZCNC]

Ok cool

Are these any good

http://www.clampusystems.com/Venturi.html

Some claim 90% odd vacuum

Not saying they are a perfect solution but are they worth considering if you have a big enough compressor?

Yes they work good but again you need a Reservoir tank because they struggle to provide enough volume direct from the generator.
Having reserve of vacuum is what you need for when vac loss happens. Otherwise you need a powerful vac pump.

Just think of it has the reverse of a compressor, you wouldn't try using air tools with no air in your tank because the pump would struggle to keep up with the demand. It's just the same but with negative pressure.! . . . Holes in your work piece are like having a high CFM air tool.!

[andy_con]

fair enough, was just a thought.

I'm tempted to just put a good quality vac pump on my credit card, do it properly first time.

any recommendations on single phase vac pumps?

[JAZZCNC]

fair enough, was just a thought.

I'm tempted to just put a good quality vac pump on my credit card, do it properly first time.

any recommendations on single phase vac pumps?

My advise is speak to someone who deals with Vacuum tables/pumps and tell them what your trying to do because your not wanting simple Vac holding when it comes to small parts with thru holes.

Or better still stand back and look for alternatives to do what your wanting. There will be other less expensive ways.!!

[andy_con]

will do

I know there are less expensive ways but home brew also means faff. sometimes its nice to buy something off the shelf

is 250mm by 160mm small?

[andy_con]

just been doing some ebay searching, I'm guessing this bad boy would solve all my problems?

http://www.ebay.co.uk/itm/Becker-Vac...item3ab170353d

[Boyan Silyavski]

I would use the compressor setup to resolve all table, mat and fixture issues. Once i know that all functions and what exactly i need i would buy then the proper sized vacuum pump.

Jumping to buy the first vacuum pump seen is not a good idea. From what i see from the picture you are again on the wrong path.

You need a 2 stage low volume high pressure vacuum pump / but enough volume/ , no high volume low pressure vacuum pump. These are not the proper technical words may be , just to have an idea what i am talking about.

This is exactly the vacuum pump my friend bought from ebay. he is using it for a vacuum chamber. I am thinking of buying one also. It seems to me its up to the task as i have seen it in real life. Its a sucker. 7cfm.
Check all specifications again including electrical, ask the vacuum table dealer or manufacturer if its ok and buy that sucker. It will be extremely unacceptable new, just check price :-)