Will a sawblade knife have good enough edge without doing any heat treating.
Пікірлер: 51
@kellyjoplin315316 күн бұрын
Just what I was was looking for too! Thank you
@kellyjoplin315316 күн бұрын
I’ve used 58-62 RC in the field, a lot. Really not practical to resharpen in the field, and you will need to resharpen, often. Don’t let harder RC steel get dull. For me, 52-54 RC is ideal for hard use, and you will need to resharpen often. But you can easily keep a usable edge like a butcher does, as the day goes on. Same is true for hatchets, axes, machetes…
@dlbknives48692 жыл бұрын
Thanks for taking the time!!!
@LozHarrop2 жыл бұрын
No worries!
@allanbrydson65632 жыл бұрын
Cheers Loz, much appreciated. Nice topic 👍
@LozHarrop2 жыл бұрын
Glad you enjoyed it
@paulmeyer79682 жыл бұрын
Could you heat treat those same samples and show us how much harder you can get them, and how you heat treated them? Thanks! I really enjoy your straight forward videos!
@LozHarrop2 жыл бұрын
yes I will be doing that shortly mate cheers
@nobob268 Жыл бұрын
@@LozHarrop hi, it's only been a few months, but did you get round to doing more testing yet?
@markdyer8442 жыл бұрын
Realy interesting mate thanks for the info.
@LozHarrop2 жыл бұрын
No problem 👍
@GenWivern22 жыл бұрын
Very useful video, thanks. I've a load of these blades (perks of being the guy who changed them) and have made bits and bobs from time to time. Frankly it never occurred to me that they'd be anywhere near hard enough, even if they hadn't annealed from heating by friction, so I've just done a rough and ready heat treat tempering them to light straw as best I can, with acceptable results. Sounds like they have the potential to be more than acceptable, though, in the hands of someone better equipped and more competent.
@LozHarrop2 жыл бұрын
Yea same here mate, always regarded them as unhardened, mot likely 7 series steel most of them so they can be made alot harder. cheers
@pickerjim92464 ай бұрын
Thanks, that was helpful
@4yoHI2 жыл бұрын
Very interesting, thanks!
@LozHarrop2 жыл бұрын
Glad you liked it!
@bulletproofpepper22 жыл бұрын
Thanks for sharing!
@LozHarrop2 жыл бұрын
Thanks for watching sam!
@jamesbarisitz47942 жыл бұрын
The body of the blades are left in the annealed state while the edges are hardened. Try testing the cutting edges in your tester. Make a rough test blade from the largest circ blade and see how your heat treat works out. A 1095 profile would be a decent guess? 👍 😃
@marshallterry3226 Жыл бұрын
I can tell what you said is true because cutting through table saw blades becomes more difficult towards the edges.
@jhonsmith6762 жыл бұрын
Thank you man.
@LozHarrop2 жыл бұрын
Glad it helped mate 👍
@marcoaureliosilva93352 жыл бұрын
JUST WHAT I WAS LOOKING FOR.
@LozHarrop2 жыл бұрын
Glad it helped mate
@milobearfrenchie2 жыл бұрын
Top video matey just goes to show a proper heat treatment specific to the type of steel your using js essential...and not to rely on what is pretty much a guess 🤝👍
@LozHarrop2 жыл бұрын
cheers Bud
@bigunone2 жыл бұрын
Wonder how much the constant heating then cooling affects the hardness. I worked in construction for over 20 years and have seen blades tossed in the trash because no one sharpens them anymore. When I was a kid I remember watching my grandpa sitting in front of his work bench sharpening his handsaw, and latter his circular saw blades
@LozHarrop2 жыл бұрын
yea charlie used to sharpen my hand saws as an apprentice too.
@markspc12 жыл бұрын
As always great video Loz. Since you are in the subject of saw blades Rockwell hardness test, would you go two steps further: Heat and quench those blades and see what RC values they would have before tempering. And step two, temper to what you normally do for knife blades, and see if they can be tempered to 59 to 60 HRC. Thank you.
@LozHarrop2 жыл бұрын
Yes will put some pieces in on my next heat treating session. Cheers
@markspc12 жыл бұрын
@@LozHarrop Thank you Loz.
@martinmarek340210 ай бұрын
I've done some testing with tungsten teeth saw body I've achieved 64 HRC after quenching before tempering. After tempering IT had about 61, also IT was suprisingly tough
@werewolf742 ай бұрын
so, seeing an attempt to harden then higher would be interesting.
@barkinsawmike62739 ай бұрын
Did you try to heat treat the big saw blade in a forge to see if it would get any harder 🤔 thanks
@johnjude2685 Жыл бұрын
Just used bandsaw blade that I quench myself they cut steel in bandsaw every day I think they must be hard but probably quench only at blade tips I'm crying after you compare steel
@8thsinner2 жыл бұрын
Good information to know, thanks for doing and sharing. How about an ice skate blade? Hedge clippers and scissors?
@LozHarrop2 жыл бұрын
probably all be in the same range as the saws mate. cheers
@dwayneburbridge3283 Жыл бұрын
I’d love to see the same test repeated after heat treating. How much does the HRC increase after you quench and temper the same steel? Best, Dwayne
@LozHarrop Жыл бұрын
Hi Dwayne, If I was to heat treat the same steels Im pretty sure they would almost all achieve 63 HRC as a minimum, they would have been heat treated when they were made to give the results when I tested them. I meant to re'heat treat the blades some time ago to find out so maybe I will in the near future. Cheers
@jarlove2 жыл бұрын
Could you harden and anele them, and se what hardness they could achieve? I am especially curious about the steel quality on the modern blade with carbide..
@LozHarrop2 жыл бұрын
yes ill do that cheers
@jarlove2 жыл бұрын
@@LozHarrop perfect!! Looking forward to seeing the results 😁
@tropifiori2 жыл бұрын
Can you reharden the blades and temper to a lower temp after forging to get those steels harder?
@LozHarrop2 жыл бұрын
Ys you can Frank they will harden to around 63 hrc at least and can be tempered back to around 59 or whatever you want
@xaralampossp.21292 жыл бұрын
Tried to brake a small piece of saw disc with a hammer and it just bend.The file tels me there is some hardness in it though propably around 40hrc as you showed.Quenched the piece in canolla oil and broke like a glass.Normaly it will make a good knife am i wrong?What is the tempering temperature for about 59hrc on these disc blades?
@LozHarrop2 жыл бұрын
Im afraid I cant give you an acccurate temp mate without hrc testing the steel first but somewhere in the 230C - 250 C range will get you to 59. Cheers
@shepardsforgeh20312 жыл бұрын
Yeah i use those steels but i always heat treat to make em harder good vid my freind!