The reason it doesn't work good is that you are not using Bernoulli's principle. So, it's not a venturi, or at least a really poor one. Bernoulli says an increase in speed decreases pressure. So you have to accelerate the air at the point of the input. This is typically done by a larger chamber feeding a smaller chamber that feeds a larger chamber. The air in the smaller chamber, where the acceleration is happening will be at low pressure. Use that drill press behind you, and a chunk of aluminum. You can easly get close to a full vaccum.
do you have an idea of sizing? diameters, legths, cross sections of suction holes... i have an access to a 3d printer, wanna make one. made one even multi stage, but i guess its too wide, with too big suction holes, would love an input from someone who has done something similar...
The reason it doesn't work good is that you are not using Bernoulli's principle. So, it's not a venturi, or at least a really poor one. Bernoulli says an increase in speed decreases pressure. So you have to accelerate the air at the point of the input. This is typically done by a larger chamber feeding a smaller chamber that feeds a larger chamber. The air in the smaller chamber, where the acceleration is happening will be at low pressure. Use that drill press behind you, and a chunk of aluminum. You can easly get close to a full vaccum.
Thank you Mike for the tips.
do you have an idea of sizing? diameters, legths, cross sections of suction holes... i have an access to a 3d printer, wanna make one. made one even multi stage, but i guess its too wide, with too big suction holes, would love an input from someone who has done something similar...
Watching and sending support nice sharing shout out boss
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