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DIY Vibrating Table

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  1. #1
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    Default DIY Vibrating Table

    Hi concreters!

    I'm going to give my first concrete table top a go and I'm trying to work out how I could construct a vibrating table using any of the power tools I already have. I was wondering if I took my bench grinder and mounted it underneith on a peice of ply (or some other table top surface), and changed the grinding wheel for something else that wasn't centered or even, if that would work? Well I'm pretty certain it would work, but would I destroy my grinder in the process?

    Thanks for your thoughts.

  2. #2
    Seasoned DIY droog's Avatar
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    I have seen a 2-stroke engine mounted to the form base used before, worked ok but not perfect.

    There are purpose built concrete vibrators on ebay starting at $100
    Concrete Vibrator Electric Control 35mm DIA Needle Stable Voltage Good Prestige | eBay

    I would not expect the bearing in a bench grinder to last very long with that type of punishment.

  3. #3
    Senior Member Neptune's Avatar
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    This might help.


  4. #4
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    Quote Originally Posted by droog View Post
    I would not expect the bearing in a bench grinder to last very long with that type of punishment.
    Yeah, that's what I was thinking.
    Last edited by mrsquish; 14th Aug 2014 at 11:30 AM. Reason: Fix quote

  5. #5
    Hammer Head - 1K Club Member
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    Default DIY Vibrating Table

    Some sites say to use orbital sander with no paper on underside


    Sent from my iPad using Tapatalk

  6. #6
    Owner Builder Belair_Boy's Avatar
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    Quote Originally Posted by droog View Post
    There are purpose built concrete vibrators on ebay starting at $100
    I bought a very similar concrete vibrator off eBay and so far it has worked well for my ICF filling.
    The one thing to note is it is a left hand thread to connect the motor to the shaft. It took me a while to work out what was going on.

    I also tried the out of balance disk on an angle grinder and it does work although the frequency of the oscillation appeared too high from my limited experiments. I am sure it was not doing the bearings much good but both angle grinders and bearings are cheep.

    It depends on if you want to vibrate the concrete only or vibrate the whole mould..... Doh - read heading - an orbital sander lacks enough power for all but a very small table and the weight of the concrete soon adds too much inertia. I would try something like a washing machine motor and an eccentric mass.
    Tools are good, more tools are better!

  7. #7
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    for the outlay & the desired outcome any drill with either percussion or rotary hammer function with do the job on evenly spaced timber blocks.
    regards inter

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