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Home Products Burch/Krein Impetus Colab #5

Price$2,995.00
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Burch/Krein Impetus Colab #5

by Burch (Burchtree Bladeworks), Michael, Krein, Tom

SKU 1136957

Date Added 02/02/2026

# Available 1

Price $2,995.00

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Overview

This framelock flipper by Michael Burch and Tom Krein features a stainless Damascus blade with a notched thumbrest and flipper. The handle has an orange peel finished titanium frame with polished edges, orange peel finished titanium backspacer, and a tip up anodized and orange peel finished titanium clip. Very smooth flipper that opens effortlessly with no wrist action. Almost perfect blade seating, and perfect detent, and lockup. Excellent work. Includes a zippered case. Marked Krein 2012 on one side of blade and Burchtree Bladeworks on the other. Excellent condition. Stamped "5" inside handle.

Product Details

Blade Length 3

Overall Length 7.25

Closed Length 4.25

Weight (oz) 5.6

Source Previously owned

Additional Specs

Knife Type Tip Up Clip, Tip Up Carry

Blade Material Damascus

Blade Details Sheepsfoot

Handle Material Metallic

Other Details Tactical

About the Maker

Burch (Burchtree Bladeworks), Michael
Burch (Burchtree Bladeworks), Michael

"I’m not sure where my love for knives came from – but it’s always been there. I started collecting knives from flea markets or garage sales. I even built a few blades in my father’s workshop when I was about 12. I had no idea what I was doing, but it was fun nonetheless. As I grew, so did my collection. After high school, I joined the United States Marine Corps as a reservist and went on to play soccer and attend college. I settled down in Springfield, Missouri and started working as an editor and writer for the internet department of a large outdoor retail company. Around 2002, the bug to build knives hit me hard. I spent hours upon hours reading the internet asking questions, and talking to as many knifemakers as I could. My first “adult knife” turned out about as well as the knives I built when I was a kid, but I kept at it and have been a full-time maker since 2007. I build most of my knives out of 1095 and W-2. I also use CPM-154 if a customer requests stainless and I use Chad Nichols’ stainless damascus. I also make my own damascus with my friend and fellow knifemaker Jody Muller."

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Krein, Tom
Krein, Tom

I have been fascinated with knives for as long as I can remember. I can’t remember a time that I didn’t have a knife… Growing up I usually had a slip joint of some kind in my pocket. As I got older I realized how useful a good knife was while playing in the woods, or fishing on the creek. After seeing a copy of Blade magazine my sophomore year in high school I decided that I wanted to be a custom knife maker. After reading everything I could find on the subject I started making some fixed blades around 1993. A little later I got a chance to work for knife making legends Bob Dozier, and A.G. Russell. I currently work for myself and my three boys help in the shop. Knives are some of man’s oldest tools. I feel the beauty of a knife is that it can be tool and weapon in one package. In my knives I feel that form should follow function. This doesn’t mean that a knife can’t be beautiful, just that its functionality shouldn’t be affected by aesthetics. I continually strive to improve my knives and the methods I use to build them.

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