outofthefire
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- Thread starter Lewis_RX8
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slim_boy_fat
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All too technical for me, but I've been watching 'Forged in Fire' on the telly and find it very interesting.
Yes, it's 'entertainment' but for someone like me it can be instructional too
.
Yes, it's 'entertainment' but for someone like me it can be instructional too
.
Lewis_RX8
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I'll make sure to think about normalising your right its not mentioned so much at least in what I have watched they seem to focus on oil quench then into temper oven.
Now to decide on a design and there is far to many to choose from on google
Think I will want to keep it simple maybe something like this but with a cheaper less cool wood for the handle scales lol
Dont think I would bother with the serrations but a good flat top would be good for battoning wood as would the gradual bevel up but that may be hard to grind with the angle grinder as thats my main tool for this job lol.
Screwdriver
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Or you can grow your own wood.
It's from a Laburnum in the front garden. It's poisonous and I like the irony...
It's from a Laburnum in the front garden. It's poisonous and I like the irony...
Lewis_RX8
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That's the plan , definitely not creative enough to draw one from scratch so trying to print off some templates and look at other bushcraft style knives then use the cardboard to see what sort of size I would like and how it fits in the hand
Screwdriver
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I copied the design off some random website and Sketchuped it.
Think I must have been in a foul mood, can't think of any reason to make it now. Maybe I should do one "just in case"...
Think I must have been in a foul mood, can't think of any reason to make it now. Maybe I should do one "just in case"...
CompoSimmonite
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I use old saw blades to make rough and ready knives to use in garden and garage - work quite well
outofthefire
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All too technical for me, but I've been watching 'Forged in Fire' on the telly and find it very interesting.
Yes, it's 'entertainment' but for someone like me it can be instructional too
I watch it as well and still learn bits and pieces. The big problem I have with it is, now I've seen cannister damscus I'm itching to have a go at it, but I can't find powdered steel over here at a sensible price.
h-dom
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UK knife maker supplies
I had the same he has only recently got it in. It's about £45-50 I think for a tin
outofthefire
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I have seen that, I just can't bring myself to dip my hand in my pocket yet, I use mostly bandsaw blades and would only use a fraction of a tin.
Kram
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Some steels you may not want to use for food, worth trying to find the alloy composition. If its not for food then use anything you like.
While not a knife, quite enjoyed making a few tools with tig welded hss bits as the edge. When tempered it gives a very different oxide colouring to normal steels.
I have a small bag of it although the steel was nothing special, mostly medium carbon, may be adequate if you want to try. You could add half a percent of case hardening powder/carbon, well mixed, into the tin?
If it needs fine powder, make a crude ball mill.
While not a knife, quite enjoyed making a few tools with tig welded hss bits as the edge. When tempered it gives a very different oxide colouring to normal steels.
Considered using bandsaw chippings? Good cheap source if you have decent grade of steel to be chopped up.
I have a small bag of it although the steel was nothing special, mostly medium carbon, may be adequate if you want to try. You could add half a percent of case hardening powder/carbon, well mixed, into the tin?
If it needs fine powder, make a crude ball mill.
The steel you have will likely be spheroidised annealed already which is fine to heat treat directly from. If you forge it then It will need a few grain refining heat cycles, but sounds like you’re taking the cut and grind approach rather than the heat and beat.
If planning to use for battoning, try and make the plunge line at the heel of the bevel a smooth flowing transition rather than an abrupt corner. Seen lots of knives break from stress risers at that point when used that way.
If planning to use for battoning, try and make the plunge line at the heel of the bevel a smooth flowing transition rather than an abrupt corner. Seen lots of knives break from stress risers at that point when used that way.
Lewis_RX8
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Maybe very occasionally but not going to be kitchen knife or anything just some rough camp fire food work if that.
Ah yes I see what you mean forging with hammering stretching etc would put a lot of stress into the metal you normalize out but with stock removal you wont so thats great!
I see so you just want to file it a bit more into a bigger radius?
Sorry for the poor description, hopefully some pictures help.
If you look at the cutting edge the sweeping grind on the right was what I was meaning
This pic shows an example of a sharp corner in the transition between the unground portion and the blade bevel
Having that change in geometry happen so abruptly can lead to it snapping at that point
This article gives way more detail than you need
knifesteelnerds.com
It does include this image that shows the result
If you look at the cutting edge the sweeping grind on the right was what I was meaning
This pic shows an example of a sharp corner in the transition between the unground portion and the blade bevel
Having that change in geometry happen so abruptly can lead to it snapping at that point
This article gives way more detail than you need
How Stress Risers Lead to Broken Blades - Knife Steel Nerds
What are stress risers? How do they increase the chance of a broken knife? How do you design knives that avoid stress concentrations?
knifesteelnerds.com
Lewis_RX8
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Ah yes that makes alot more sense thank you !Sorry for the poor description, hopefully some pictures help.
If you look at the cutting edge the sweeping grind on the right was what I was meaning
View attachment 348789
This pic shows an example of a sharp corner in the transition between the unground portion and the blade bevel
View attachment 348790
Having that change in geometry happen so abruptly can lead to it snapping at that point
This article gives way more detail than you need
It does include this image that shows the resultHow Stress Risers Lead to Broken Blades - Knife Steel Nerds
What are stress risers? How do they increase the chance of a broken knife? How do you design knives that avoid stress concentrations?
View attachment 348794
A good amount of force will go through that area when battoning so does make sense to put the radius on it
addjunkie
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Old industrial hack saw blades make superb knifes!
Lewis_RX8
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Got my BC4 template from online knife making website I'll get the link when back inside , cut out onto some ply to see what it felt like and size wise is probably about right length not tiny pocket knife size but not a massive one where I could just use my hatchet , and fits my smaller hands well
A bit restricted as the steel isn't really that wide about 28mm so not loads to play with however this seems to work and feel fine
A bit restricted as the steel isn't really that wide about 28mm so not loads to play with however this seems to work and feel fine
