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Does anyone know of a way to test the amount of vacuum that is being pulled by my vacuum pump? It seems that it is not holding the wood down as tightly as it should as I am having to clamp and stand on some of the boards of sheet goods to keep them from moving. I have checked and taped closed all of the pipe joints to prevent leakage and still have problems.
What's the vacuum gauge say?
Have never had one on it in the over 10 years that I have had the machine.
Do I just get one from Grainger and install it in one of the pipes?
Our machine has one built in. We installed one that we mounted where you can actually see it.
It is very helpful to know if something is leaking or wrong. For example if the gasket moves under the table.
For what it would cost I would install one and plumb it to an easily visible spot. Mcmaster sells everything you need.
I'll get it done this weekend.
What kind of vacuum numbers does yours pull?
are the edges of your spoilboard sealed?
what mdf are you using ?
are you storing your sheet goods as flat as possible ?
Are you blocking all open spoil board area ?
Vac guage is great to see where an op is missing some blockage, but if we put 2 sheets of corian up, we are gonna read 34 cubes if sheet goods like melamine 26 cubes max
we are running a 40 hp travini on 5x12 and seal the edges with red auto body filling primer no we are not going to run it through the edge bander
The number that matters is with and without the material.
Pay attention to cut order. I tend to go around the perimeter and into the center. Try to always have the last cut of a part against a larger part and the last part should be pretty much free.
Always bow side down.
I use a 30 HP Sullair rotary screw 28" vacuum @ 430 CFM. 3" hose Splitting into 2 2" lines at the machine.
Make sure all filters are clean.
Sounds like your sheet goods aren't flat?? Plywood? The only time we have a problem is on small parts. We just set the software to onion skin those. 40hp Quincy screw, 4" line, big filter, 5x10 table, A big vacuum gage plumbed where it is easy to see. Also have a big air pressure gage same way. We cover unused area of the spoil board with pieces of laminate.