routerstable-saw
I have a 1" thick sheet (maybe plywood or solid wood or MDF) and I would like to cut a section out of the edge. This image shows the board, in green, in cross section:
The angle is 30/60 degrees. I'm considering trying to find a router bit that can accomplish this, or trying to use a table-saw dado blade at an angle. Are either of these the right approach? Should I be trying something else?
Router bits have to be carefully checked against the type of cut being created. For the general cut there is a correct feed direction and there is an incorrect direction. For some bits used in a certain way there is no ideal cut direction.
The general principal is that the work piece should be fed into the router bit so that the incoming wood is pushing against the direction of bit rotation. If you feed the wood into the bit in the same direction as the rotation of the bit the cutting edges will most assuredly grab into the wood and try to pull it along.
The picture below shows the concept for the proper direction doing an "outside" cut on the wood piece when looking down from the top of your router table.
If you are trying to do some other type of cut then you should post some pictures so we can make additional suggestions.
There are two possibilities - create a channel in the trim or create a channel in the floor.
For network and TV cables, you probably need at least a gap about 1/2 inch wide and 1/4 to 3/8 deep. The trim looks too shallow to put in that channel. You could cut a channel like that and cover it with the existing or comparable trim.
While a router can cut channels, it needs several inches around its cutting bits for the base of the unit, and your cut would be too close to the raised hearth.
A good alternative might be a multitool
These are specialized power saws that can cut in very close quarters. The saw blade (it has several others) is offset, so you can cut downward into the floor right up to the edge of the hearth. They come in various price ranges starting at about $60.
I would remove the molding, draw a line about 5/8 out from the hearth all around. Then I would cut downward through the floating floor using the half circle wood blade following along the line. You probably will need to use the straight saw blade at the corners.
The wood strip you cut off should be easlily removed if it is not glued down. If it is, a small prybar, cheap screwdriver or chisel should easily pop it out.
Lay your cable, replace the trim. You may want to use cable clips to keep the wire in the channel until the trim is in place.
Best Answer
There are router bits designed to cut exactly that profile, at the standard angles needed to assemble polygonal tubes... the usual name seems to be "bird's mouth edge routing bit". Here is one example of a kit with the bit with the desired angles:
Or have I misunderstood your question?