
Article 302 (279 more) in rec.crafts.metalworking:
From: anvil@ducvax.auburn.edu
Subject: Differential Heat-Treatment
Organization: Auburn University, AL
Date: Thu, 14 Jan 1993 12:26:50 GMT
Lines: 25

Hello again,
One of the best features of a bladesmith forged and heat-treated knife is
it's differential heat-treat. This can be done two different ways:
(1) Assuming you have normalized the blade after forging it to shape and
ground it to 90% completion. You slowly heat the blade with edge up in the 
fire. When the entire blade gets to critical, quench in whatever medium you
have chosen(I prefer pre-heated oil). Be very careful at this point because
the blade is very brittle at this point. Holding the blade with 1/2 inch of
the edge submerged in water,use a propane torch to heat the back of the blade
to a dark blue,then quench the entire blade to stop the color run. Now bake
the blade in the kitchen oven at 400 degrees for one hour. Now you have a 
blade with a hard edge but a soft back making it less likely to break under
stress.
(2) Again assuming that you have normalized after forging. Heat only the 
edge to critical leaving the back still black then quench. By hardening 
only the edge you have eliminated the propane torch step mentioned above.
Now bake blade in the oven at 400 degrees for one hour and presto-changeo
you have a differential heat-treated blade.

Good luck
John Sugg
Yellow Hammer Forge 
Waverly,Alabama USA
 
   
Article 339 (146 more) in rec.crafts.metalworking:
From: anvil@ducvax.auburn.edu
Subject: Calendar of Events
Organization: Auburn University, AL
Date: Tue, 19 Jan 1993 14:34:43 GMT
Lines: 78

The following is a listing of blacksmithing events that appeared in the
"Bituminous Bits" Newsletter of the Alabama Forge Council.

Alabama Forge Council
Bladesmithing Symposium
April 16,17&18 at Jim Batson's Forge,Madison Alabama
Demonstrators will be;
Jerry Fisk:Damascus steel and Setting up a knife business.
Don Fogg: Damascus steel
Chris Marks: Damascus steel Cajun Style
Gary Long: How to make your brochure
Billy Bates: Engraving
Allan Eldridge: Wire Inlay
Ed Halligan: Schrimshaw/Filing
Hank Knickmeyer: Casting Fittings
John Greco: Mass Production Knives
(Costs were not listed but last year it was $75.00 for the whole weekend.)

Second Annual Ozark Regional Blacksmithing Conference
Potosi,Missouri
April 24-25,1993
Demostrators;
Daryl Meier
Doug Wilson
Two teaching stations with Jerry Hoffman,Stan Winkler,Ken Valdejo and others.
Double Anvil Shoot
Auction By Tennessee Colonel Tim Ryan
Tailgate Tool Sales(No Charge)
Free Camping and hotels nearby.
$40 both days or $25 per day


Southeatern Regional Blacksmithing Conference
Madison,Ga
May 14-15,1993
Demonstrators:
J.C.Hawkins-Hammer Making
George Dixon-Artistic Forging
Al Pendray-Wootz Steel
Russel Odel-Metalspinning
Hershel House-Advanced Smithing
Francis Whitaker-Solving Your Problems
Frank Ellis and Ryan Johnson will taech Beginning Classes


Indiana Blacksmithing Association Conference
June 4-5,1993
Several Demonstrators
They will have a candlestand competition with awards.


Illinois Valley Blacksmithing Association June Event
Pontiac,IL
June 11-12,1993
Clay Spencer,demonstrator

Rocky Mountain Smith's Third Annual Conference
August 26-29,1993
Carbondale,Colorado
Three day workshop for advanced smiths by Francis Whitaker
August 23-25,1993


Alabama Forge Council Annual Workshop and Conference
Tannehill State Park
September 10,11 and 12,1993
Demonstrators:
Ellis Cameron
Walt Scadden
Charley Orlando


Fred Caylor's PowerHammer Rebuilding Workshop
March 5-6-7,1993
Sid Suedemeier's Forge
420 4th Corso,Nebraska City,NE 68410
402-873-6603 for info.   
    
