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  • Wood Chipper Blades

    From fos@sdf.org@21:1/5 to All on Sun Apr 17 21:35:24 2022
    picked up a 50 year old Sears Shredder and Bagger. 3.5 HP. Little fucker
    is in great shape. Ran some Seafoam in ethanol free fuel trough it
    which cleared up carburation issues and runs great for an engine i
    thought would need at least a carb rebuild when i bought it.

    after 4-5 hours of using it, i've decided the blades are worn beyond serviceability and need replaced. looking for replacement blades is
    quite likely pointless so i'm not going to even bother trying.

    this things has a stack of 3 what look like small lawn mower blades.

    what steel would you make the blades from? i could go with A2 or D2 tool
    steel heat treated to somewhere in the RC 50-60 hardness range. or even
    M2 steel if i wanted to mulch metal fence posts, though the housing
    around the blades may not be quite up to the task.

    would pre hard 4140 be a decent choice? or would just some 1018 crs be
    suffice for chopping up small yard brush and leaves?

    --
    fos@sdf.org
    SDF Public Access UNIX System - https://sdf.org

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Leon Fisk@21:1/5 to fos@sdf.org on Mon Apr 18 11:05:24 2022
    On Sun, 17 Apr 2022 21:35:24 GMT
    fos@sdf.org wrote:

    <snip>
    after 4-5 hours of using it, i've decided the blades are worn beyond >serviceability and need replaced. looking for replacement blades is
    quite likely pointless so i'm not going to even bother trying.

    this things has a stack of 3 what look like small lawn mower blades.

    They are an odd shaped mower blade. If they look anything at all like
    this image I would try sharpening them first:

    https://www.tractorforum.com/threads/sears-shredder-bagger.36927/

    And the part number "658A30" which wasn't expensive seems to be
    obsolete:

    https://www.ereplacementparts.com/craftsman-917285260-grass-catcher-parts-c-158286_158288_494875.html

    Those slotted side pieces that the blades spin thru in the above diagram
    should be in reasonable condition too.

    I would check out Edger blades and see if any are the same length and
    have a mounting hole you can work with. It would be a good material to
    use for making newish blades...

    --
    Leon Fisk
    Grand Rapids MI

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From wws@21:1/5 to f...@sdf.org on Tue Apr 19 06:00:11 2022
    On Sunday, April 17, 2022 at 4:35:28 PM UTC-5, f...@sdf.org wrote:
    picked up a 50 year old Sears Shredder and Bagger. 3.5 HP. Little fucker
    is in great shape. Ran some Seafoam in ethanol free fuel trough it
    which cleared up carburation issues and runs great for an engine i
    thought would need at least a carb rebuild when i bought it.

    after 4-5 hours of using it, i've decided the blades are worn beyond serviceability and need replaced. looking for replacement blades is
    quite likely pointless so i'm not going to even bother trying.

    this things has a stack of 3 what look like small lawn mower blades.

    what steel would you make the blades from? i could go with A2 or D2 tool steel heat treated to somewhere in the RC 50-60 hardness range. or even
    M2 steel if i wanted to mulch metal fence posts, though the housing
    around the blades may not be quite up to the task.

    would pre hard 4140 be a decent choice? or would just some 1018 crs be suffice for chopping up small yard brush and leaves?

    --
    f...@sdf.org
    SDF Public Access UNIX System - https://sdf.org

    How about a quick hardface and 40 degree sharpening?

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From fos@sdf.org@21:1/5 to wws on Wed Apr 27 15:09:48 2022
    On 2022-04-19, wws <wstiefer@gmail.com> wrote:

    On Sunday, April 17, 2022 at 4:35:28 PM UTC-5, f...@sdf.org wrote:
    picked up a 50 year old Sears Shredder and Bagger. 3.5 HP. Little fucker
    is in great shape. Ran some Seafoam in ethanol free fuel trough it
    which cleared up carburation issues and runs great for an engine i
    thought would need at least a carb rebuild when i bought it.

    after 4-5 hours of using it, i've decided the blades are worn beyond
    serviceability and need replaced. looking for replacement blades is
    quite likely pointless so i'm not going to even bother trying.

    this things has a stack of 3 what look like small lawn mower blades.

    what steel would you make the blades from? i could go with A2 or D2 tool
    steel heat treated to somewhere in the RC 50-60 hardness range. or even
    M2 steel if i wanted to mulch metal fence posts, though the housing
    around the blades may not be quite up to the task.

    would pre hard 4140 be a decent choice? or would just some 1018 crs be
    suffice for chopping up small yard brush and leaves?

    How about a quick hardface and 40 degree sharpening?

    it's been decades since i've had access to spray welding equipment and
    i've sold my stick welder since then too. completely slipped my mind. i
    know a great fabrication shop that can do hardfacing for me. thanks for
    jogging my memory. this is the way to go. especially since the manual
    calls the stack of blades a weldment which implies it's quite a bit of
    work to replace the blades. if it's even possible. may have to build a
    whole new assembly. thanks again.

    --
    fos@sdf.org
    SDF Public Access UNIX System - https://sdf.org

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From wws@21:1/5 to f...@sdf.org on Wed Apr 27 10:14:02 2022
    On Wednesday, April 27, 2022 at 10:09:52 AM UTC-5, f...@sdf.org wrote:
    On 2022-04-19, wws <wsti...@gmail.com> wrote:

    On Sunday, April 17, 2022 at 4:35:28 PM UTC-5, f...@sdf.org wrote:
    picked up a 50 year old Sears Shredder and Bagger. 3.5 HP. Little fucker >> is in great shape. Ran some Seafoam in ethanol free fuel trough it
    which cleared up carburation issues and runs great for an engine i
    thought would need at least a carb rebuild when i bought it.

    after 4-5 hours of using it, i've decided the blades are worn beyond
    serviceability and need replaced. looking for replacement blades is
    quite likely pointless so i'm not going to even bother trying.

    this things has a stack of 3 what look like small lawn mower blades.

    what steel would you make the blades from? i could go with A2 or D2 tool >> steel heat treated to somewhere in the RC 50-60 hardness range. or even
    M2 steel if i wanted to mulch metal fence posts, though the housing
    around the blades may not be quite up to the task.

    would pre hard 4140 be a decent choice? or would just some 1018 crs be
    suffice for chopping up small yard brush and leaves?
    How about a quick hardface and 40 degree sharpening?
    it's been decades since i've had access to spray welding equipment and
    i've sold my stick welder since then too. completely slipped my mind. i
    know a great fabrication shop that can do hardfacing for me. thanks for jogging my memory. this is the way to go. especially since the manual
    calls the stack of blades a weldment which implies it's quite a bit of
    work to replace the blades. if it's even possible. may have to build a
    whole new assembly. thanks again.
    --
    f...@sdf.org
    SDF Public Access UNIX System - https://sdf.org
    You're welcome.
    I'm on a tear, recently screwed a seatbelt bolt through my string trimmer bump knob.
    Figure I can bump it for years without a replacement.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)