Machinists – Help!

  • Ralph Wiggum
    Maple Grove, MN
    Posts: 11702
    June 8, 2020 at 9:43 am #1948215

    Guys,

    Bone-headed me dropped a knob from my BIL’s boat into the lake this weekend. Unfortunately, it’s been discontinued and a replacement is impossible to find. Any machinists around here (prefereably in the Twin Cities) that could fabricate something? The photo is what I need, and I have a one that you could copy–I just need an additional (and maybe a spare, too).

    I feel like a total dumbass and need to make this right.

    Shoot me a PM. I’ll definitely pay a fair price!

    Attachments:

    1. Screenshot_20200608-093418_Chrome.jpg

    SuperDave1959
    Harrisville, UT
    Posts: 2816
    June 8, 2020 at 9:45 am #1948217

    Does the knob have to be metal? And what does it go too? I have seen on some of the car shows that I watch where they make a part with what looks like the equivalent of a 3D printer.

    Ralph Wiggum
    Maple Grove, MN
    Posts: 11702
    June 8, 2020 at 9:58 am #1948222

    Metal would probably best, but plastic might work, at least for the knob. The tapered, conical part is what is killing me. It’s from the tower on a wakeboard boat.

    Coletrain27
    Posts: 4789
    June 8, 2020 at 10:05 am #1948225

    It wasn’t next to a dock or something where you could try finding it with a magnet was it?

    David Blais
    Posts: 764
    June 8, 2020 at 10:13 am #1948228

    Can you buy the screw and threaded knob b separate

    Ralph Wiggum
    Maple Grove, MN
    Posts: 11702
    June 8, 2020 at 10:19 am #1948232
    Coletrain27 wrote:

    It wasn’t next to a dock or something where you could try finding it with a magnet was it?

    It was not. It was really windy, so we moved out onto the lake.

    David Blais wrote:

    Can you buy the screw and threaded knob b separate

    The problem is that the tapered, conical section slides into a conical hole that keeps everything tight. We jerry-rigged a bolt for the meantime, but isn’t a long-term solution.

    TheFamousGrouse
    St. Paul, MN
    Posts: 11002
    June 8, 2020 at 10:25 am #1948234

    Holy moly, Ralph. Looks like it came off the bleedin space shuttle. Knurled, o rings, tapers…

    Would a possible design improvement include an eyelet and a keeper leash? If it happend once…

    At my hunting farm I have a water pump that has a threaded plug for the priming port. After dropping the threaded plug (metric of course) off the bridge I got smart and put a keeper leash on an eyelet and attached it to the pump.

    Grouse

    Craig Sery
    Bloomington, MN
    Posts: 1180
    June 8, 2020 at 10:32 am #1948239

    Ralph, where are you located? Everything but the knurl shouldn’t be a problem. Not sure if we even have a tool in the shop.

    bigpike
    Posts: 6259
    June 8, 2020 at 10:36 am #1948244

    If your struggling to get this built I can do it. I would need some basic dimensions and what material you want it built out of. Not near the cities but I can ship it….fyi

    munchy
    NULL
    Posts: 4668
    June 8, 2020 at 2:20 pm #1948367

    What is it off of?

    smackemup
    North Metro
    Posts: 192
    June 8, 2020 at 2:37 pm #1948374

    May be able to help out

    Ralph Wiggum
    Maple Grove, MN
    Posts: 11702
    June 8, 2020 at 4:00 pm #1948397

    Got someone. Thanks, guys!

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