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31st August 2015, 05:54 PM #16Intermediate Member
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Cool,should I cover the whole surface or would It be overkill?
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31st August 2015 05:54 PM # ADSGoogle Adsense Advertisement
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31st August 2015, 09:55 PM #17
Do a line (bead) about an inch in all the way round, Then do a W pattern between the box you have created running about 50mm apart. Place on granite and let it settle under its own weight. Give it a light jiggle to help with the bond and measure to make sure the ply is positioned properly, leave 24 hours to set.
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1st September 2015, 09:22 AM #18Intermediate Member
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Will do that, thanks
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1st September 2015, 11:08 AM #19GOLD MEMBER
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Silicone, I agree. Pattern, no. To allow for air to escape as the granite settles into the silicone (no trapped bubbles).
Squirt out the biggest MONSTER 'X' on the plywood and get a second pair of hands to help you set the stone in square.
OTOH, why glue it down at all? My 5 most recent desks and benches (several 240cm long) do not have attached tops.
What's to get the desk top to jump around?
1. There's bound to be all sorts of stuff stacked, piled, stored on the bench.
2. The Law of Gravity is your friend.
Mind you, I haven't built a stick frame desk in at least 5-10 years. So far, nothing has shifted.
That speaks to the piles of books and things on the desk to keep the tops from floating away.
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1st September 2015, 11:56 AM #20
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1st September 2015, 03:48 PM #21Intermediate Member
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Speaking of gravity to secure the granite itself (without glue), I think if I put a layer of anti slip mat between the plywood and stone, combined with the weight of items which will be on top of the stone (27" monitor and keyboard), it will pretty much makes it very hard to move?
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1st September 2015, 03:59 PM #22GOLD MEMBER
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Antislip mat will work just fine. What the Hello are you doing for the risk of your GRANITE desk top sliding around?
Honest to goodness, that sucker ain't gonna float off in the night.
I use slip mat under my wood carvings so they don't jump around. Right now on the bench, 2 x 18kg cedar blocks for feast dishes.
2 posts for story poles, 15cm x 15cm x 160cm. Mostly adze work for the roughouts, the strike force is wasted in wood that moves.
Solid as she goes!
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1st September 2015, 06:05 PM #23Intermediate Member
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- Aug 2015
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- Sydney
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Yeah I think I might do just that, especially this would be a study desk and would be against the wall, so you can only pull, not push the slab.
I'll see if it moves around then I will apply the glue
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1st September 2015, 11:49 PM #24
If your design doesn't provide continuous strong support, more than just plywood, you should consider having the slab rodded with fiberglass reinforcements too if it isn't already.
Innovations are those useful things that, by dint of chance, manage to survive the stupidity and destructive tendencies inherent in human nature.
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