vacuum table using compressed air

[GEOFFREY]

Hi, I had a Phoenix Magnum router (sold by Denford before they made their own cnc). The system as I understand it, was the compressor air blows over a venturi

tube which is connected to the vacuum matrix. this did work fine for engraving(not that I did much as I did not get to grips with the Procad software), but I am not sure how good it would have been after sucking through a sacrificial mdf board.

A disadvantage was that it needed my noisy compressor running all the time. I personally think you would be better off using a vac pump.

I have just made a vac table from pvc, which works quite well, but I had hoped to do away with my original ally table, sadly this was not possible as it did not

stay flat enough and I have had to reinstate the original table and bolt the vac table to it, reducing what was already a very limited Z travel. A friend

machined the plastic for me (too big for my fixed gantry router), but cannot machine another in ally on his machine.

Good luck if you do go for the compressor system, but I would go for a vac pump. Regards, G.