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Disaster Broken mandrel?

Discussion in 'Modding' started by Sherk, 10 Mar 2006.

  1. Sherk

    Sherk New Member

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    I was cutting a hole in the back panel of a case today, and was just finishing one side of the cut, when the reinforced wheel got stuck, and the mandrel screw sheared off. I mean, the damn screw head just fell off, and lay there on what I was working on... the disk was stuck in an upright position, and my dremel was in my hand. Weirdest thing I've ever seen. Plenty of broken disks before, but the mandrel? :wallbash:
     
  2. Soulmage

    Soulmage Member

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    It can happen rather easily, the inside hole of the disk gets wollowed (sp?) out and starts to "cut" the screw. i have had two mandrels break on me :/
     
  3. antiHero

    antiHero ReliXmas time!

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    WTF is a mandrel? :eyebrow:
     
  4. Sherk

    Sherk New Member

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    It's the metal piece that you screw a disk onto, that goes into the chuck :dremel:.
     
  5. Hazardous

    Hazardous New Member

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    This is a mandrel :D

    The internet is a hive of information :cooldude:
     
  6. Matt_Ingram

    Matt_Ingram New Member

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    Well, on the subject of mandrels, last time i came to use my dremel (to mod my case to fit the nice 38mm thick panaflo fan into the back) I noticed the cut wasnt quite right, something a bit off. Took the disc off the work and looked at it for a second, it wasnt just rotating around its axis. Bloody mandrel was bent! Im amazed that the disc didnt shatter as soon as I put it to the work. I love these fans btw, Panaflo M1A's from Dorothy Bradbury. Awesome.
     
  7. gbeeby

    gbeeby New Member

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    WOW that looks a super intresting thing to start a thread on !!1 :clap:
     
  8. Washfordmonkey

    Washfordmonkey New Member

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    never heard of one of those breaking!

    btw do dremels have any sort of warranty.. mines just stopped working.. no reason and checked fuses.
     
  9. bender386

    bender386 New Member

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    chech the brushes
     
  10. Washfordmonkey

    Washfordmonkey New Member

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    how would i go about doing that :S
     
  11. Anobis

    Anobis New Member

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    i had that a cople of times. 2 times the disk stood stil and the rest keep on turning and the litle scruw flown off. and onse i had the disk flown away in cluding the scruw. it was nice in bedid in the table not far wer i was standing lol. perents wernd to hapy a bout it but it was kinda funy. thinking back to it :naughty:
     
  12. bender386

    bender386 New Member

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    it should be those 2 big screw type things on the side.
     
  13. Touchwood

    Touchwood New Member

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    Mandrels break or bend because people apply too much pressure; unless of course there is a design fault.

    Always use sharp tools, so that the tool can do the cutting with little feed pressure, then you will suffer less mandrel faults. Finally, always ensure the rotating tool is in contact with the material being cut, ground or polished before you engage high revs, because by not doing so you may cause the mandrel to bend. These are the two main causes of this problem associated with the untrained.

    Better luck next time,
    Touchwood
     
  14. saxman

    saxman New Member

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    I have found that often the reason for mandrels failing is either not tightening them down all the way and the disk spinning and cutting the mandrel. Or they just break from applying too much force. I have borken many dremels this way. And not just the bits a couple of units as well. So make sure your disks are tightened down
     
  15. H0w1ingM@dMurd0ck

    H0w1ingM@dMurd0ck New Member

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    I've had a mandrill that the threads went on. Just used superglue to glue the screw and disk on. Worked fine and it was easy enough to change disks and do it again.

    see here: http://en.wikipedia.org/wiki/Mandrill :dremel: :naughty:
     
  16. $loth

    $loth New Member

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    Hope this doesn't happen to me, i've just ordered a multipro and i'm kind of skint at the moment! (£280 for my college course and girlfriends birthday present!)
     
  17. kenco_uk

    kenco_uk I unsuccessfully then tried again

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    You want to mod a monkey?!!
     
  18. NoahFuLing

    NoahFuLing New Member

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    I think he means MANDREL. http://en.wikipedia.org/wiki/Mandrel
    Lol at that, though. I've broken many cutting disks, and one electric saw, but no mandrels. Almost broke the Dremel in half when making cabinet handles, though. :blush: :worried:
     
  19. saxman

    saxman New Member

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    this isn't that big of an issue. that part of the multi tool is cheap and doesn't really fail unless it is just majorly mistreated or used enough to acually wear it out.
     
  20. Firehed

    Firehed Why not? I own a domain to match.

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    I've never broken one *touch wood*, but they cost all of a dollar or so to replace. I've probably got at least five sitting around from getting extra wheels and a cutting kit.
     

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