Anyone who has a milling machine and has to do that nonsense instead of using a dial indicator or edge finder should be ashamed.
(No disrespect meant to you Tom for posting it.)
Interesting, I can see where that would be helpful for us guys that don't have fancy tools.
Guess you have to pay someone to make the guide for you? I use my drill press. I dont have the fancy equipment. If it has to be that perfect I take it to one of my buddys with machine shop.
Just reread my posting above. I really didn't mean to come off as jerk when I wrote it... sorry.
I have a drill guide that you chuck into your drill, it has a chuck on it that fits in a guide with two rods and a base. The base allows you to drill perfectly vertical holes in a horizontal board (or vice-versa) but it also has a built in V block to let you drill holes centered through a round object. Wasn't very expensive, and I've found it useful for many things.Mine has "Portaline Tool Co. San Diego, CA" on it.
I just use a v-block and never have an issue, I do center punch the shaft. If you are matching a part, I only drill 1/2 way, install mating part then drill from the other side using a pin or bolt to keep it centered. Probably nothing much better than a drill fixture if you have the time.
Leave it to a machineist with all the tools and plenty of time on his/her hands. V-block as mentioned above.
Nothing wrong with drill guides. They have been used for years. The benefits are ease in centering, and less likelihood of a wandering drill bit, especially when entering a convex surface. The method in the video makes sense to me.
Tim Eyssen makes a device, Handy Holer, that makes drilling on round stock a so easy task. It centers the holes perfectly.
I spent a lot of my machining career making jigs for drilling holes in parts that are only fancy drill guide. I have easier ways to do that but for those that don't the neat thing is that it uses
The stuff you already have I like it. Philip