I have a small Delta bench top drill press with a small cast iron table. This small table
is quite adequate for drilling holes in metal and small parts but it does not provide the
support and other features desired for the larger woodworking projects.
After searching the Internet and looking at many auxiliary tables, I selected
the various features I wanted to incorporate in my auxiliary table. All of
these functions must be convenient to use or you will not use them.
I don't think metal swarf and filings mix well with woodworking, so the auxiliary table had to be convenient to remove so I could still work on metal parts when necessary.
I framed the auxiliary table around the original cast iron table, which
provided a very snug and positive fit. The cast iron table has tapered support
webs on the bottom.
I utilized those tapered webs so the auxiliary table wedges
tight as it slides into position.
I also added two locking knobs to secure it in place - just snug, not tight.
The auxiliary table is thick and rigid, made of several layers of plywood with a tempered hardboard top and the edges wrapped with oak. I used oil base polyurethane varnish.
The hand-crank was extended to the side so the table could still be
raised and lowered.
T-tracks were installed to provide many clamping options and for attaching
the low profile fence.
The low profile fence is quite adequate for most operations and does not interfere with the drill press feed levers.
T-nuts were used for attaching the t-tracks to prevent tear-out.
Slots through the table allow the use of bar clamps and other holding
methods in close to the center.
The waste block was installed off-center so it could be rotated and flipped
over for new positions to maximize the life of a single waste block.
T-track channels catch everything and they get packed tight with cuttings
and sawdust. I find the t-track is not used that often and it is a pain to keep
them clean. So I use wood strips that slide into the track and prevent material
from getting stuck inside the channels.
The dust collector really works great and keeps the fine dust out of your face
and collects the majority of the large cuttings as well. You really appreciate
the efficiency of this system when drilling MDF or particle board with a Forstner bit.
The articulating arms are attached to a central stack of support rings, which
were lowered over the support column after the drill press head was removed
(a two man operation). A small locking bolt just keeps the support rings from
wiggling around -just snug, not tight.
I have found I use my drill press much more since I built the auxiliary table and it drills more accurately (and safely) when the work piece is properly supported and clamped.