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(Topic ID: 155095)

Removing threaded metal post from playfield

By skov

8 years ago


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    #1 8 years ago
    OP
     
    HHS

    skov

    Inactive member

    DK Horsens

    11y 15,400 22 9

    I've started restoring a Johnny Mnemonic playfield and came upon an issue with removing the threaded metal post. The one that are bolted on the back of the playfield.

    I just can't seem to get them to move.

    I've removed the bolts, tried forcing them up with a hammer from the bottom with some force, but they're just not moving. I'm worried that I'll splinter the wood topside if I apply to much force with a hammer or similar. This is the first time tearing apart a playfield I've come across this problem. Anybody have any advise on getting the post out without causing damage to the playfield?

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    #2 8 years ago
     
    LAD

    skywalker

    Pinside member

    AU Rowville Melbourne

    10y 85,900 1,616 2

    Stubborn ones i use my teethless multi grips, twist out slowly

    trr002_(resized).JPGtrr002_(resized).JPG

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    #3 8 years ago
     
    ???

    jimjam

    Inactive member

    AU Melbourne

    12y 26,800 175

    your posts have loc tight on the thread (glue) to stop them becoming loose.

    Try heating your post from under the playfield on the t nut with a soldering iron. usually takes 2 minutes to soften the glue and then unscrew

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    #4 8 years ago
    OP
     
    HHS

    skov

    Inactive member

    DK Horsens

    11y 15,400 22 9

    Quoted from jimjam:

    your posts have loc tight on the thread (glue) to stop them becoming loose.
    Try heating your post from under the playfield on the t nut with a soldering iron. usually takes 2 minutes to soften the glue and then unscrew

    I don't think they do. They're not using a t-nut but a regular bolt under the playfield, and the bolt comes off no problem. It's getting the bare post out of the playfield that's causing the problem. So unless the post i glued to the wood this is not the issue.

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    #5 8 years ago
     
    TOM

    tomtest

    Tom

    US Hagerstown, MD

    11y 79,050 1,373 7 8

    Rather than tapping them out unscrew them, the threads have a tendency to lock it in place.

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    #6 8 years ago
     
    DJT

    Taxman

    In Memoriam

    11y 90,950 6,228 34 30

    If they are not screwed in but bolted then the topside dose not have flat sides to grip and unscrew. It will be round at the base.

    You can put some tape on the vice grips to try and prevent scratching them up but pretty much you have two choices.

    Tap it out like you are supposed to and hope you are not right about splintering the playfield. Or locking those vice grips on tight for a turn and pull and replace the post if you scratch it up.

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    #7 8 years ago
    OP
     
    HHS

    skov

    Inactive member

    DK Horsens

    11y 15,400 22 9

    Thanks for the input. I was hoping for a magic cure, but I guess it just doing what I've tried and hope for the best

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    #8 8 years ago
     
    REC

    Cash_Riprock

    Pinside member

    US Woodstock, NY

    11y 51,050 1,781

    You could try making the post 'cold'...ice pack/ice...air spray can upside down etc. The cold will make the metal shrink and just maybe make it easier for you to get out

    10 months later
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    #9 7 years ago
     
    DXV

    chadderack

    Pinside member

    US Sandy, UT

    10y 108K 2,851 15 43

    I'm running into the same issue here... painfully slow metal post removal. Seems bad to have to use vise-grips. One post took over 15 minutes to remove alone... slowly turning it 1/4 turn by 1/4 turn with pliers... how in the hell do you put the posts back in?

    I'd rather use posts that have hex sides around the base so you can at least get a ratchet on it.

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    #10 7 years ago
     
    DXV

    chadderack

    Pinside member

    US Sandy, UT

    10y 108K 2,851 15 43

    Solution!

    chuck (resized).JPGchuck (resized).JPG

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    #11 7 years ago
     
    LFS

    pinballaddicted

    Pinside member

    9y 123K 4,412 81

    Quoted from chadderack:

    Solution!

    Wow! I am going to try this!

    9 months later
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    #12 6 years ago
     
    ???

    westofrome

    Pinside member

    US Alexandria, VA

    11y 77,300 2,158 2

    Quoted from chadderack:

    Solution!

    Did you use the drill to remove, put back, or both?

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