A Side Extension Table was required to fill the space between the front and rear fence support rails, outboard of the saw table. Some folks install a solid panel, as I did on my General 350 cabinet saw in my old shop because I had a multi-drawer cabinet underneath. Many folks use this space for a router table, which is a great way to add another tool to the shop without eating up any floor space. We have seen many great examples of this type of router table here on the LJ forums — it seems there are a lot of clever folks in the community willing to share their ideas and designs! I love looking at all of the various configurations and the skookum Yankee ingenuity! Whoops — and including our non-Yankee constituents…...... :-)
In that vein, I would like to thank the forum member who I think is here on LJ, for the inspiration for my take on a Side Extension Table. I copied a photo of your design, but I was unable to find your post when I was writing this blog — but whoever you are, thanks for sharing such a novel idea — you will recognize my version of your design!
I couldn’t bear to waste the space between the fence rails, but I didn’t need a router table since I will be building a free standing one soon. So when I saw the design of a Downdraft Sanding Extension Table , all the bells and lights went off! So here is my version of this accessory.
The downdraft table is surrounded by a removable fence system to help contain the sanding dust. Threaded tooling knobs with matching inserts secure the fence to the table and the fence components to one another. The table top is 1/2” Baltic Birch plywood covered in high pressure laminate. There are (432) 3/8” holes on a 1” x 1” grid, that were plunge routed through the top and finished with slight chamfers both sides to improve airflow. This hole pattern was designed to produce about 800 CFM airflow from my 3HP DC. A piece of perforated plastic shelf liner will be used under the workpiece when sanding.
The dust collection box is 21” wide and 27” deep, with 5” high maple side members. The bottom of the box is 1/2” plywood. Sloped baffles, on all four sides, made from 5mm Birch underlayment plywood, channel the dust down into a 1 1/2” x 14” center dust collection slot in the bottom of the box. Note the same aluminum duct tape I used to attach the baffles inside the saw cabinet in the earlier discussion.
A 6” diameter sheet metal right angle furnace boot with a 6” diameter PVC coupling was attached to the bottom of the dust collection box. The bar supported by the allthread pieces is a bumper to protect the thin sheet metal duct from damage when I roll my shop vacuum in under the dust box for storage.
This view shows the dust collection box installed between the fence rails. The laminate covered, perforated, 1/2” plywood top panel (slid aside) installs flush with the top of the box.
This view shows the modular fence components. They are designed so that one or both of the short sides can be removed to accommodate long pieces. If both short sides were removed, the long side would be clamped to the Unifence. However, most of the work I do should fit within the fences. The installation hardware is stored in one of the on-board storage drawers when not in use.
The modular fence components were designed to be stored underneath the dust collection box when not in use. Note the angle clips used to secure the dust collection box to the fence rails.
Again, my thanks to the forum member who posted the original design. One of the things I most enjoy about the LJ forum and others is the sharing of ideas that others can use and hopefully improve upon and/or adapt for their own use. What a great woodworking community!!
Well, that’s about it for this chapter. Hang in there….....................there’s a lot more to come. Thanks for stopping by. Please feel free to leave any comments or constructive criticisms. All questions will be answered.
-- Paul, Auburn, WA