Let me add my two cents.
I have used several types of buffing machine dust collectors over the
years. At one time I was working for a shop that had four of the table
top units with a single air conditioner type filter. This was by far
the dirtiest. The walls of the buffing room were always covered with
dark gray dust.
The table top units were eventually replaced with two cabinets with
multiple stacked air conditioner type filters. This setup did get a
the air cleaner, but not a lot. Replacing the filters is messy. It is
not a good setup to use when reclaiming your metal is a concern.
In my own shop I installed a Handler 3/4 HP shaker bag type unit. The
shaker bag units filter the air much better. I can breathe clean air
in the shop, this is the most important aspect. Open your dust
collector and look at the fans, are they clean? Mine are. I don’t
need to replace filters and it’s easy to empty.
I found a used dust collector $400.00. I made a table top for it.
Bought hoods and a two speed polishing motor. It’s been a few years
since I’ve built it, but I think that I spent about $700.00 total. I
like the setup more than any commercially made setup that I have seen.
The reason that I like it is because the table and motor are
positioned foreword of the cabinet. This allows me to sit on a stool
without hitting my knees on the cabinet.
Timothy A. Hansen
TAH Handcrafted Jewelry