Damascus Steel

Bob Kramer Knives

Bob’s custom Damascus, also known as ‘pattern welded steel’, is the result of combining at least two different types of steel that harden and temper in the same range to achieve a desired aesthetic. Damascus has a  complex creation process and requires lots of time and concentration; it constantly allows me to tap into my creativity to produce a unique art piece that is also a high performance tool for your kitchen.

Starting Material Bob Kramer Knives

Bob begins with two or more different types of carbon tool steel, each of which harden and temper in the same range.

Starting Billet Bob Kramer Knives

He layers the steel into a ‘steel sandwich’, tack-weld it together and put in a hot forge, where the steel becomes “sticky.”

Bob Kramer KnivesForge Welded & Drawn

The ‘steel sandwich’ is then placed under the hammer where the material is set and drawn out, lengthening the billet.

Drawn Billet Cut & Restacked Bob Kramer Knives

Each layer represents 25 layers of steel, so once this stack is fused there will be 125 layers here. This process will be repeated one more time.

Impressed Billet Bob Kramer Knives

The billet is then rolled and imprinted to create the pattern. This particular billet is comprised of 400 layers.

Heat Treatment

This is really the heart and soul of the blade. Heat treatment is crucial for a high performance blade. Every blade in my shop gets heat treated, one blade at a time. The full process takes two and a half days to complete. Each thermal process is held within ten degrees and the end product surpasses aerospace standards.

Finished Blade, handle roughed in Bob Kramer Knives

This is a finished flip flop pattern Damascus blade with the handle roughed in.

Bob Kramer KnivesFinished Damascus Steel Knife

8″ Chef (European Style) Flip Flop Damascus with Dyed Big Leaf Maple Handle.