My Knife Making Thread - Page 14





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  1. #261
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    Default Re: My Knife Making Thread

    In any case he used a negative method where the blade was exposed to uv etc.

    I think it might be the same type of method you are using.

    Maybe you can try to contact him via his website. He lives in Parys.
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  2. #262
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    Default Re: My Knife Making Thread

    I don't know when it is forged
    This was hammered thinner and broader. Some kind of cleaver type sharp metal object.
    12mm leafspring down to 6mm
    50.5mm wide to around 7 or 8mm I could not make a accurate reading. OAL as this stage about 240 to 250mm. Tang is around 100mm

    I did three normalize cycles and left it in the forge to cool slowly over night. After bringing it evenly to critical temp. I hope I did not do something silly after all I have no idea what I am doing
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    Pajero Gen2 1996 2.8TDi LWB

  3. #263
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    Default Re: My Knife Making Thread

    Why three cycles? Is normalise and anneal in this case the same thing?
    Wrt not knowing what you're doing, at least you do something. Sometimes one musn't be too scared to try something.
    I believe in any case you couldn't mess it up. It should be soft now and when you're finished tou just harden and temper it again.
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  4. #264
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    Default Re: My Knife Making Thread

    From what I understand you need to normalize after forging cus u heat up the steel over 800 degrees that is when grain growth occurs. Thus normalize to reform the grain into tightly packed structures. This is not achieved in one step depending on the growth that may have occurred. Thus 3 cycles. This is what I have read and seen. At least 3 cycles after forge welding which is much hotter than what I was doing.
    Annealing is the softening of the steel to a workable state since it was leafspring that was harden before
    Like I said this is my understanding. If I missed something please correct.
    Pajero Gen2 1996 2.8TDi LWB

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  6. #265
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    Default Re: My Knife Making Thread

    Thank you for the explanation. Now I understand. Makes sense.
    Last edited by Spiceman; 2020/05/16 at 08:46 AM.
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  7. #266
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    Default Re: My Knife Making Thread

    Done the profile and grind away the hammer blows. It was a bit heavy and I wanted it to be a broad knife rather than a chopper. Very thin at 3mm.
    Did the heat treat as well and almost forgot to drill the holes
    I want a 30mm high grind. This means a very steep grind angle. Looks like 2 degrees. My till table cannot grind that steep. I will have to go back to the jig. I must get the grind proper to make this project pop. Else it is back to try again and that is something I don't want to do

    See the original size of the leafspring
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    Last edited by hogbeast; 2020/05/16 at 05:59 PM.
    Pajero Gen2 1996 2.8TDi LWB

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  9. #267
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    Default Re: My Knife Making Thread

    For the last week I was testing dry film etching. Initial results showed promise but when I etch the blades every thing went wrong.
    Out of desperation I went back to the positiv20 method. However I learned a few things through my experimenting. Thus the result.
    One test piece perfect
    Two blades perfect
    I am growing increasingly confident with each etch
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    Pajero Gen2 1996 2.8TDi LWB

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  11. #268
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    Default Re: My Knife Making Thread

    What do you think. I think I have the process down.
    I must design the graphic on the other side.
    Let's see how it turns out.
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  12. #269
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    Default Re: My Knife Making Thread

    I'm glad you got it sorted. It seems " practice makes perfect" still rings true.
    Congrates.
    Last edited by Spiceman; 2020/05/23 at 05:31 PM.
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  13. #270
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    Default Re: My Knife Making Thread

    Quote Originally Posted by Spiceman View Post
    I'm glad you got it sorted. It seems " practice makes perfect" still rings true.
    Congrates.
    Thank you for the encouragement
    Pajero Gen2 1996 2.8TDi LWB

  14. #271
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    Default Re: My Knife Making Thread

    ..it looks real good .......What did you change in your approach?

  15. #272
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    Default Re: My Knife Making Thread

    HI Guys

    Completed my first knife ever...
    I used 4mm 01-Tool Steel, hardened it and Tempered it etc.
    Added a Hollow Grind and sharpened with whetstone.
    Handle is made from Mozambique Teak wood with brass pins inserted.

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  17. #273
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    Default Re: My Knife Making Thread

    Quote Originally Posted by Ruan_1 View Post
    HI Guys

    Completed my first knife ever...
    I used 4mm 01-Tool Steel, hardened it and Tempered it etc.
    Added a Hollow Grind and sharpened with whetstone.
    Handle is made from Mozambique Teak wood with brass pins inserted.

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    Nice one. Much better than my first attempt
    Pajero Gen2 1996 2.8TDi LWB

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  19. #274
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    Default Re: My Knife Making Thread

    Quote Originally Posted by plunger View Post
    ..it looks real good .......What did you change in your approach?
    With the dry film method you heat the film to adhere to the steel. You place the steel in the tray and wash the developer over it. This made me think if I can use the same approach. You also sandwich the stencil between glass and the steel.
    So first thing I did was spray on the positiv20 wipe off repeat twice leaving a thin layer each time then spray a thin coat. Then heat it with a clothes iron to around 60 to 80 degrees. It then sits 30 to 60 minutes (not sure I do other stuff not really time it. Metal must be cool before exposure)
    I expose 90sec and let sit in the the dark for 15 minutes
    I then remove the stencil and develop in the caustic soda. I find the resist is very durable. Much more than just letting it dry over night.
    Block off area and etch with ferric chloride.
    I have improved the result ten fold

    In the last Pic u can see the difference. I could not do the sandwich thing. My blade warped slightly
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    Last edited by hogbeast; 2020/05/24 at 08:09 PM.
    Pajero Gen2 1996 2.8TDi LWB

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  21. #275
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    Default Re: My Knife Making Thread

    Bolsters coming on nicely. Pins invisible thus far. I hope they don't show themselves.
    Don't use cheap lock down drill bits. They don't drill exactly round and to size thus u get movement where you don't want.
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    Pajero Gen2 1996 2.8TDi LWB

  22. #276
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    Default Re: My Knife Making Thread

    Quote Originally Posted by hogbeast View Post
    Bolsters coming on nicely. Pins invisible thus far. I hope they don't show themselves.
    Don't use cheap lock down drill bits. They don't drill exactly round and to size thus u get movement where you don't want.
    You prefer UDL?
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  23. #277
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    Default Re: My Knife Making Thread

    Quote Originally Posted by Spiceman View Post
    You prefer UDL?
    What is UDL?
    Pajero Gen2 1996 2.8TDi LWB

  24. #278
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    Default Re: My Knife Making Thread

    Quote Originally Posted by hogbeast View Post
    What is UDL?
    It's jobber drill bit made from cobalt(?).
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  25. #279
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    Default Re: My Knife Making Thread

    Quote Originally Posted by Ruan_1 View Post
    HI Guys

    Completed my first knife ever...
    I used 4mm 01-Tool Steel, hardened it and Tempered it etc.
    Added a Hollow Grind and sharpened with whetstone.
    Handle is made from Mozambique Teak wood with brass pins inserted.

    Click image for larger version. 

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    Looks GREAT, well done!
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  27. #280
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    Default Re: My Knife Making Thread

    Quote Originally Posted by Spiceman View Post
    It's jobber drill bit made from cobalt(?).
    First time I heard about this type.
    No I use the slightly more expensive. Like 30 bucks or so works well for me. Just this time I found these and I was lock down desperate. It was like R8🙄
    Pajero Gen2 1996 2.8TDi LWB

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