Is EDM the right choice for removing broken stud?
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  1. #1
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    Default Is EDM the right choice for removing broken stud?

    I've got this small engine that has a broken stud in the exposed end of the crankshaft. I have made several attempts at removing it but it is hardened and resists drilling and other mechanical means of removal. Is EDM a good choice for removing the stud?

    Will I have to remove the crankshaft from the engine (there is some exposed shaft at the crankcase). Is it expensive? A new engine is about $120.00 (the crankshaft itself is not sold individually).

    Let me know your thoughts. Thank you.

  2. #2
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    I'd get a new engine

  3. #3
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    Yes, you will have to remove the crankshaft from the engine . . . edm happens under dielectric fluid, which is an oil that becomes gritty with edm'd particles; not good for engines.

    Better to buy a new $120 engine.

  4. #4
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    I’ve had very few studs that could not be removed by welding a nut to the top of the stud. If the threads above the stub are messed up, that’s when welding is a lot harder.

  5. Likes jptech, bonestock liked this post
  6. #5
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    Just wait till the next sale (next weekend) and use a coupon and you can get another Predator engine for about $89.

  7. #6
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    or... Accept the challenge and make yourself a new crankshaft. You can do it!!

  8. #7
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    Portable EDM for broken tap/stud removal starts at $1750.00
    Number one stocking supplier for wire and sinker edm consumables

  9. Likes memphisjed liked this post

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