Reply by crank49

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Posted on Thien tall to make one?

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4032 posts in 3894 days

#1 posted 02-20-2017 03:02 AM

A Thein Baffle is a cheap cyclone.
The baffle and the cyclone both work by accelerating dust and air in a circular direction so the larger particles are stripped from the air flow by centrifugal force. The slot of the Thein baffle and the bottom of the cyclone that expands into the dust bin at the bottom serve to allow the dust to escape in one direction and the air to continue in the other direction, back up to the duct leading to the fan inlet.

Why am I explaining this? Because the action of accellerating the flow requires a good amount of pressure. Pressure in a dust collector costs horsepower. A lot of it. If you don’t add horsepower in the form of a bigger motor, the system will balance itself by reducing the air flow.

Basically, the HF dust collector is a decent machine as it comes from the factory. I’ve used one for almost 10 years. It does need to capture fine dust better. The best way to do this is with the replacement of the 30 micron bag with a cartridge filter. This is by far the best improvement you can do.

The secondary best thing you can do is to put an expansion chamber between the dust source and the fan inlet. This can simply be a trash can with an inlet and an outlet pipe in its lid. This chamber will capture most of the big dust and chips without dragging the system pressure down like a cyclone or Thein baffle will.

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