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Thread: Zackerty's 440C Steel Investment Casting Project

  1. #1
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    Stuart Ackerman's 440C Steel Investment Casting Project

    If the Mods feel that this thread infringes the rules in any way, please remove it?

    Daywalker and a few others, have known of this project, and now it is time to reveal why I have been absent for so long...
    Casting steel using the lost wax process, have the ability of giving the edge of a knife blade more aggresion, and longer lasting cutting times possible...
    I can fit 16 knives at a time, and a few shapes are possible.
    This batch will be drop point, warncliffe, sheepsfoot, and few surprises...

    Lotsa money, and lotsa time under the bridge, and now.....

    The investment casting project is under way...
    I will reveal the knives when complete...

    The shell about to be baked, and the wax melted out.


    The 440C steel melting,


    The hot ceramic shell placed on sand, ready for the liquid steel.


    Waiting...feed me!


    Steel kisses the shell.


    Almost filled.


    One hour after the steel was poured.
    Last edited by Stuart Ackerman; 12-26-2013 at 10:21 PM.

  2. #2
    Spyderco Forum Registered User butch's Avatar
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    super cool can wait to see how it goes

  3. #3
    Spyderco Forum Registered User Piet.S's Avatar
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    Interresting stuff, I'v read about it on BB forum.
    Please continue.

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    Spyderco Forum Registered User Puyallupknifegu's Avatar
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    Thumbs up

    Very cool Zackerty! Thank you for the pics! Very interesting stuff...someday I hope to have a nice shop like yours!!!

    Tim
    God bless!
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  5. #5
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    That is NOT my shop, sadly...
    That is a company that is specializes in investment casting of steels, and I am paying them to cast my designs, and I finish them off with lotsa grinding and handling, as well as Kydex...
    I was taking the pics...
    And getting indoor sunburn from the molten steel...

  6. #6
    Spyderco Forum Registered User SeanH's Avatar
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    Thumbs up

    AbFab zackerty!

    Feed us more Pics when you can. Please.

    Also, you said "giving the edge of a knife blade more aggresion, and longer lasting cutting times possible..."

    How does lost wax casting do this?
    Last edited by SeanH; 11-05-2006 at 04:19 PM.
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    Spyderco Forum Registered User Th232's Avatar
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    Lovely! Definitely interested to see how this goes.
    Will

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  8. #8
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    Quote Originally Posted by SeanH
    AbFab zackerty!

    Feed us more Pics when you can. Please.

    Also, you said "giving the edge of a knife blade more aggresion, and longer lasting cutting times possible..."

    How does lost wax casting do this?
    The structure of "normal" steel is hot rolled and refined, and heat treatment will give you a certain consistent grain structure...
    This grain structure in cast steel is slightly enlarged and more "toothy", and so more aggresive, like mini serrations, you could say...
    The edge holding is also better as a result, due to the carbides being more durable...
    I am no expert on steel and the HT thereof...just well read...

  9. #9
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    ANY cast steel, BTW, not just lost wax processes...
    Lost wax works for my process, and design requirements...

  10. #10
    Spyderco Forum Registered User jaislandboy's Avatar
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    very cool thread/photos Zackerty! I'm learning lots....thanks for the steel education....
    brian
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    Spyderco Forum Registered User dialex's Avatar
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    Thumbs up

    Thanks for the great pics and for the story. Can't wait to see the final results. Good luck and please continue.
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  12. #12
    Spyderco Forum Registered User ghostrider's Avatar
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    Thanks for sharing that with us. Looking forward to seeing/hearing the final results, and/or possibly the rest of the process.
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  13. #13
    Spyderco Forum Registered User 224477's Avatar
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    I am looking forward to see final products..

    Good luck with the project!
    "Having a dull knife is like having a stupid friend."

  14. #14
    Spyderco Forum Registered User zenheretic's Avatar
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    I would say cool, but it is hard to say that when looking at molten steel. I can't wait for more pictures. Steel working is pretty interesting science.
    Follow the mushin, but pay it no heed.

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    Boye..

    is that like the Boye dendretic steel? He does stainless and cobalt.

  16. #16
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    Very much like Boye Dendritic steel...my HT will be a little different...

  17. #17
    Spyderco Forum Registered User DAYWALKER's Avatar
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    Wow!!!

    Aloha zackerty,

    Great seeing you here!

    My goodness knifebro...what a process!!! Thanks so much for sharing the pictures, I kinda had a hard time trying to visualize the whole procedure! Amazing...

    I have a ring that was made by the same process, some kinda replica ring from ahhhhh, I forget what era, but it says: "Vous et noul autre"...my wife and I have the same ring.

    God bless and be safe...see ya later
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  18. #18
    Spyderco Forum Registered User severedthumbs's Avatar
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    so how will this steel compare to Kershaws MIM 440C?
    "A little temperance is a good thing" -- Sal Glesser

    http://i151.photobucket.com/albums/s...s/6b81eb13.jpg

  19. #19
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    Quote Originally Posted by severedthumbs
    so how will this steel compare to Kershaws MIM 440C?
    I have no idea, as up till I read your comment, I had never heard of MIM 440.

    Straight out of the mold, and ground roughly to get an edge, I could already out cut "normal" HTed 440C steel...
    No HT, yet, remember!!!
    I guess mine will be about the same as Boye's type, as we are both essentially using the same steel...

    I have no idea what hardness the as cast steel is, but I hope to finish a few in the next few weeks( I have just moved house, and my grinding gear was stripped for transport )

  20. #20
    Spyderco Forum Registered User Stuart Ackerman's Avatar
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    Vous et nul autre?
    You and no other...very romantic, Chad

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