@ Mr happymoose The fence is not a big deal. You want it first of all to be very flat across the front where your work piece moves against it.
Ideally you would want to have an opening wide enough for the bit to operate in. You can do this in a number of ways, including having a couple of interchangeable front pieces you can put on with different size openings. Or you can make a fancy one with a sliding pair of front surfaces you can adjust to any width. The first choice is easiest
Ability to easily clamp it to the table. Many options, but the easiest is to make an L shaped fence, a vertical fence and horizontal base that you can clamp to the base. Generally, you have one end of the fence have a pivot point so it stays pretty much in place, then the other end so you can move it forward and back easily to adjust the fence to the bit. If you have the ability to cut very square pieces, you can glue 4-6 triangle pieces tie the two peices together.
Dust handling and collection: Lots of ways to do this. Attach a box behind the fence where the bit sits and put a hole in it the right size to fit you DC hose (see pix of shop made port). Most hoses have long plastic nozzles that will stay in place well.
You can also purchase a DC attachment (see picture of commercial model)
You should cut a small bevel across the bottom of your fence front (1/8th inch) so the dust as you cut has a way to escape. Dust can build up under your workpiece and cause misalignment on assembly, so also brush the sawdust up before every cut.
Under table dust extraction. This is a complex topic, but essentially you want a box for the sawdust to fall into. You can attach a DC hose to the box. You must allow air into this box so the air flow will pick it up and blow it out.
Stick has also recommended something I really like, which is to add a snorkle, to the bottom of the router so it is pulling clean air in, across the router. This will help keep sawdust from being sucked into the router and gumming up the works over time.
Finally, a safety item. This is a bit of a challenge to make for someone brand new, but you might also want a safety shield as shown. This involves Ttrack as shown, which is not really hard to do, but may seem daunting to someone new to routers.
You can also put Ttrack on each side of the table, running vertically, near the edge, this will allow you to use a knob with T bolts instead of clamps--nice but not necessary.
As usual, the pictures loaded in reverse order.
Pix one is a basic fence with DC port and a fixed opening
Pix two is the safety shield with the Ttrack showing on the top of the fence front. It also shows the movable split front. Star knobs on the back are in slots you cut with a router in the fixed part of the fence. Star knobs are very convenient. You can use T nuts or countesink tapered end bolts to keep the front surface flat. Looks complicated, but is easily done on the router.
Pix three is a simple shop made dust extraction port.
Pix four is a commercial dust extraction port. You can find these on Amazon or any of the woodworking stores online.
The more I do, the less I accomplish.
Last edited by DesertRatTom; 11-21-2019 at 12:56 PM.