I built an air cleaner before. My comments from that experience are:
- If you need to buy a new squrril cage fan to construct an air
cleaner, you probably better off buying an air cleaner instead of
building it because the new squrril cage fan will eat up all the money
saving from building an air cleaner. Therefore, this is important to
get a free or very low cost squrril cage fan instead of buying it.
Otherwise, this project won't make any economic sense.
- If you want to cut down the noise coming from the air cleaner, you
may want to use heavy and bulky material to construct the air cleaner,
such as MDF. This will make the air cleaner very heavy. And you may
not want to hang that heavy object over your head. This means you may
need to put it on bench top or on the floor.
- If you are going to put it on bench top or on the floor, you may
find that it will take up your valuable shop space. This is especially
a problem if the workshop is small. In this case, you may want to
convert it into a multiple-functions unit instead of just doing air
cleaning in order to get the most use of the same space. You may make
it into a sanding table, or a stand for other tool, or an outfeed
table as suggested by another newsgroup member. I didn't make mine to
be multiple-functions, and now I regret :(
Hope your project a success.