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Thread: Mini plate compactor for sandstone slabs

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    olefella's Avatar
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    Mini plate compactor for sandstone slabs

    Sandstone slabs are heavy and difficult to tamp to an even surface. A commercial plate compactor/vibrator is too heavy, damages the pavers and can crack them. This is a mini-compacter, made out of scrap I had in the antique department, weighs 30kg with a 1/4HP motor. Works well, cost nothing.


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    Last edited by olefella; Apr 20, 2020 at 06:55 AM.

  2. The Following 14 Users Say Thank You to olefella For This Useful Post:

    AKpapa (Apr 27, 2020), Altair (Apr 20, 2020), baja (Apr 22, 2020), bobs409 (Apr 22, 2020), Drew1966 (Apr 26, 2020), EnginePaul (Apr 23, 2020), high-side (Apr 22, 2020), Inner (Apr 22, 2020), Jon (Apr 21, 2020), mwmkravchenko (Apr 21, 2020), rlm98253 (Apr 21, 2020), Scotty12 (Apr 21, 2020), Scrounga (Apr 21, 2020), Tooler2 (Apr 22, 2020)

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    Thanks olefella! We've added your Mini Plate Compactor to our Miscellaneous category,
    as well as to your builder page: olefella's Homemade Tools. Your receipt:




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    Mate, it doesn’t get any better than that. Works well+cost nothing=
    The only problem now is keeping it because when your mates find out you have one......you know the rest.

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    rdarrylb (Apr 22, 2020)

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    olefella's Avatar
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    You're not wrong Scrounga - one mate's already searching around for a compactor to do his path and I'm trying to avoid him. Never works!

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    bobs409 (Apr 22, 2020), rdarrylb (Apr 22, 2020)

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    Great idea! I need one to compact some sand in my barn that the bloody groundhogs tunnel through, and I don't want to spend $500 for one that I wouldn't use much. Never thought about an eccentric weight as the vibratory source. I had thought of a crank to an isolated bottom plate. Your idea is much simpler. I will be saving this for a future build!!!

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    You shouldn't have to tamp the slabs if you've properly compacted the base. It's the whole point of having laid base-to provide a solid, stable surface to lay your paving on.

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    Very nice. Why use Western Red Cedar as it’s worth over $100/metre? Cheapo pine would do the same job.

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    Your build is very interesting. I'm wondering, if you had a bit more offset weight on your rotating shaft, if it would momentarily jump in the air, allowing the operator to move it easier sideways. I'm in need of this same sort of machine for a garage slab foundation prep. I'm working right now.

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    Quote Originally Posted by Pa1963 View Post
    You shouldn't have to tamp the slabs if you've properly compacted the base. It's the whole point of having laid base-to provide a solid, stable surface to lay your paving on.

    The slabs vary in thickness from 28-35 mm, and, while the undersurface is saw cut some have flakes broken off so itís not always even. The base is compacted FCR, and I have brushed off all largish chips so itís pretty flat and stable. Thereís a layer of sharp sand under the slabs allowing them to settle so their top surface is even. I started off tamping them with a rubber mallet but they need a bit more hence the vibrater. Iíve laid smooth concrete slabs before, but not sandstone, so maybe Iíve got something wrong, but this seems to be going ok now.



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