Denny has been carving miniature caricatures and Santas (his favorites) for 20 years. He has won many blue ribbons at the Iowa State Fair and other carving competitions. He also teaches woodcarving class at his home studio in Des Moines.

Denny's favorite carving tools are knives. In the early '90s he found it difficult to locate a good knife at an affordable price so started experimenting with making knives, using different types of steel. He was not having much luck until he found O1 tool steel. O1 tool steel is designed for hand tools and works very well when hardened and properly heat-treated. Once he figured this out, he started making knives in 1993 as a part time business selling them to local carvers. Since 1997 he has been making knives full time and selling them through out the United States.

In 1999 Denny started making and selling gouges. Some are standard sizes, and others are a result of special requests from carvers.

All of his knives and gouges are made of the finest O1 tool steel. He uses wood handles made of oak because he prefers the feel of the wood. All of his regular knife blades are glued and riveted in three places for extra holding power. His smallest detail knives are mounted in the handle with epoxy. The back edge of the knife blade has been rounded to allow for ease of cutting through the wood. In 2002, he started using laser cut blanks for all his tools.

The knives and gouges come sharpened and ready to carve.