Don Robinson is a heavily experienced Knifemaker, Tool & Die Maker, Tool Designer, and Manufacturing Engineer.
This is my Texas Toothpick design and is what I have been making the most of lately. It is 3 detailed pages.
Clip blade length is 3 1/4". Closed length is 4 1/16"
Half stop for safety.
www.midwestknifemakers.com books and videos on making knives instructional