Harbor Freight's Machete is made of "High Carbon Stainless Steel," I'd guess it's 7Cr17MoV, but I'm really not sure, since it's cheap and chinese. This is all guessing, and Step 5 would be started within 1 hour of step 2. But here's my off-the-wall idea: 1. Cut and Grind smaller knives from Harbor Freight machete made of "High Carbon Stainless Steel." Not sure how to anneal this. 2. Heat until non-magnetic. 3. Air Quench to room temp. (I read 1 post that said it was an air quenched metal, but I'd prefer to oil Quench.) 4. Place between Dry Ice Blocks to cryo treat to -109 F. (I've no idea if this will help) 5. Temper at 335 F for 4 hours 6. Place between Dry Ice Blocks to cryo treat to -109 F. (I've no idea if this will help) Any critiques, suggestions or ideas at all are appreciated!