|Project by jwisbey||posted 10-18-2011 04:24 PM||6311 views||26 times favorited||5 comments|
This a a downdraft table I made using an old furnace fan blower from a furnace that was replaced in my house. It sat around for 15 years until I decided to put it to use. The fan is wired for 4 speeds so I can control the flow of air in the shop. I used peg board glued to 1/4” plywood for the top and drilled holes for the inflow of air (too many to count). I made it the same height as my existing bench so that I have an expanded work surface for larger pieces.
I use a series of 6 filters (20×20), 3 on each side. Each is progressively finer. This way I can change the cheaper ones more often while maintaining airflow through the table.
I use a anti-slip rug pad when I am sanding and the suction from the inflow holds the piece without the need for clamps, even when using a belt sander. When sanding the table does a good job of eliminating dust in the air. It also filters the air when I am using other machines in the shop. This has greatly reduced the airborn dust in my shop and I wish I had built it earlier.