https://www.youtube.com/watch?v=RspVPuHK8n0
Win this razor sharp hand crafted kitchen knife for yourself!! Blade is made from 1075 high carbon steel, and hardened to 65 Rockwell, tempered back to 60 Rockwell for ease of sharpening by a beginner knife enthusiast. Handle is reclaimed redgum with black and red G10 accents.
I have just got the new workshop up and running after nearly 12 months! To celebrate I made a quick little kitchen utility knife which will be given away on 12 Feb 2021. Hopefully I am at 2,000 subscribers by that point ;)
The Official give away rules:
To enter you must
1.) Be subscribed to my channel so you don't miss next months give away
2.) Leave a comment on this video to let me know a tool I should add to my collection. Only tools that do not appear in this video will be counted in the draw, so watch carefully!
3.) Enter as many times as you like.
*Draw is open to anyone over 18 *I will pay shipping via Australia Post to wherever in the world it happens to be won. *Winner will be notified on this channel and via direct message *Winner will be selected at random via Excel function and then I will check if their comment is valid / and they are subscribed. *
Winner will be drawn at 6P.M. 12th Feb 2021 Australia Eastern Time. Find Youtube community guidelines here: https://www.youtube.com/howyoutubewor... ***Important*** YouTube is not a sponsor of this contest and by participating viewers consent to release YouTube from any liability related to this contest.
Danu duit agús slan!
Heat Treating 1075 High Carbon Steel:
The heat treating of the blade is as follows for anyone wanting to heat treat 1075 high carbon steel themselves.
After forging normalisation is required. This helps re-homoginise the grain size to give best results during hardening. Normalisation is a simple process that is probably overlooked by a lot of people. All you have to do is heat the steel to a particular heat then let it cool in air being careful not to place it flat on any heat sinks like your anvil or the floor. Anything that draws the heat out of your blade on one side more than the other will cause a difference in grain size. Blade should be below 200 °C before returning to the forge for subsequent refinement cycles. The repeated heats at lower temperatures refines the grain size as a final preparation for hardening. I only normalise the 1075 that I have forged.
Normalise: Hold blade at temperature for 5 minutes and remove from forge.
870 °C
815 °C
760 °C
Hardening: Hold blade at temperature of 815°C for 5 minutes and quench immediately into medium speed oil.
Temper 1075 immediately in a large oven. Using the small toaster ovens is dangerous as they are prone to wide over shoots of the set temperature. I prefer the kitchen oven these days as it heats up more slowly and does not have the temperature variance problems of a small oven only heating a small area up.
If you achieve full hardness in 1075 steel the blade hardness should be 65 HRC. Tempering at 204°C in the oven should draw this to 60 HRC allowing for stress relief and good sharpen-ability in the hands of a beginner. Tempering at higher temperatures will reduce the hardness further and give a tougher blade but will reduce the edge retention i.e. sharpening will be required more often. Temper twice at whatever the desired temperature is. Allow the blade to cool to room temperature between cycles.
For 1075 the temperatures I use are the same recommended by Master Smith Kevin Cashen for 1084. More heat treating information can be found on his website for a range of steels commonly available through Artisan Supplies