In this video I make a marking gauge from a 10mm steel rod, a 30mm steel hex bar, 5mm thick brass, some screws and a washer.
For the cutting part of the marking gauge I used a normal washer that I've attached to a blot with two nuts and chucked it in a drill to sharpen it on a grinder. I then used stone to do the final sharpening. For the glue up I've just used regular 5 minute two part epoxy.
Very useful tool for any woodworker, especially for those that use a lot of hand tools. It doesn't take a lot of time to make it and you pay a fraction of a cost of a new one.
To tap the holes I've used a homemade tap wrench which is one of the most useful tools that I've ever made. I may make another one just to show how it's done if there is any interest in that.
Hope you enjoy and thanks for watching.