Two piece truss rod help

Hello everyone, I am making a new build and I was wondering how I could go about routing a two piece truss rod rout with out the fancy jigs. The truss rod is a reverse double expanding ( stew Mac ) spoke nut.

I know of one method with a routing table and drawing lines as seen in this video Below , But I do not like how in the end you could still just pull the truss rod out.

http://www.youtube.com/watch?v=KBBH3GstMOM&feature=player_embedded

There is nothing wrong with being able to just pull it out. Once you turn the nut if even a little it us under pressure and holds itself. I like them, but many of the builds this year used single truss rods which lie in a curved channel. A two piece takes a straight flat channel.

A lot of folks put a dab of silicon at the far end of the rod to hold it in place.

Just so I know another method , How would I go about routing a straight line with my router without a jig?

Another method would be to clamp a fence to the neck and use a template guide on your router.

This would involve calculating an offset line to the channel you are going to route which would be the OD of the template guide less the diameter of the router bit divided by two.

Maybe just look up template guides and youtube and google to see how they work. It all sounds complicated when you type in a short post like this but they are actually really very simple to use.

All you need is a router table and a fence for a hot rod style rod. Set up the fence so that the center of the bit is going to be on the centerline of your neck. You can just clamp a straight board down and use that as a fence. Nothing really fancy is needed. You determine where you want the slot to end and mark it on the top of the wood. Put a piece of tape on the fence marking the center of the bit. Rout off about 3/16" or so off at a time, so you do multiple passes. You either run the wood into the bit until the marks meet or start at the mark and lower it onto the bit and exit the neck wood. Use a sharp bit. If you use a 3/16" bit after you have made the correct depth. Move your fence about 1/32" in or out and redo that last pass. You can also put on some layers of thick tape on the fence edge to do the same thing, if you don't want to move the fence. This will give you the proper width for the rod. Some guys use 1/4", but I don't want it that loose. You'll probably never remove the rod, so I wouldn't worry about it.