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j56speed



Joined: 05 Apr 2007
Posts: 23
Location: Leichhardt

PostPosted: Thu Apr 09, 2009 8:22 am    Post subject: Reply with quote

What wood? I've tried a varity but find that the best is from Mr Plywood.... 3.5mm 3 ply .. (the trick is they must be 3 of equal thickness) 4 pieces of this make 16mm thick deck. Important to get the ply to be laied up going with the grain. I use a special glue called Titebond III which allows a longer play time (waterproof too) before going off. It is important to press all 4 sheets in the quickest time and to have some way to stop the boards from sliding round....

Like the Skull, I too have been toying with this process for what seems an age.. the process is long and involved but moving a great lump of concrete seems such an effort when there are easier options.... quite happy to pass on any tips if you want with pics ... just ask.

Cheers
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wba



Joined: 04 Jul 2008
Posts: 85
Location: Narrabeen

PostPosted: Mon Apr 20, 2009 9:42 am    Post subject: Reply with quote

Here are some more pics from the weekends work.


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dave k



Joined: 15 Oct 2008
Posts: 46
Location: cairns

PostPosted: Thu Apr 23, 2009 2:35 pm    Post subject: Reply with quote

fitz wrote:
I'm gonna chuck my 2c in here aswell.
The reo should be nowhere near the middle of the slab!
30-50mm from the face.
Think along the lines of how fibreglass re-inforces a skate deck. All the flex will be closest to the outer skins.
Of course the re-o' can't go on the surface, so it should go as close as possible. You also need a strong enough skin hence the 30-50mm gap.
I'd even be using reo' both top and bottom.
Great job on the mould Very Happy


have to agree with fits on the reo
also put a brace acrross the top to support the blank , to stop it from moving when you pour the cement
the finnished mould looks great
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wba



Joined: 04 Jul 2008
Posts: 85
Location: Narrabeen

PostPosted: Mon May 18, 2009 1:20 pm    Post subject: Reply with quote

Well, its all finished now, and I have pressed my first deck.

It seems to have turned out ok. The deck feels strong.

Here are some photos.

press



Pressed


Finished product.


Thanks to everyone for their input.
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fitz



Joined: 30 Mar 2006
Posts: 815
Location: Sydney

PostPosted: Mon May 18, 2009 10:24 pm    Post subject: Reply with quote

Tidy job mate.
Great to see you've taken care right through the process.

1 more tip.
Suspend the top half with 2 heavy duty tension springs. This will hold the press open just enough to get the wet ply in and save your back.
The hydraulic cylinder will have enough power to close the press shut overpowering the springs.
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wba



Joined: 04 Jul 2008
Posts: 85
Location: Narrabeen

PostPosted: Tue May 19, 2009 10:22 am    Post subject: Reply with quote

fitz wrote:
Tidy job mate.
Great to see you've taken care right through the process.

1 more tip.
Suspend the top half with 2 heavy duty tension springs. This will hold the press open just enough to get the wet ply in and save your back.
The hydraulic cylinder will have enough power to close the press shut overpowering the springs.


Thanks,

we have actually come up with a different way of suspending the top mold. The 2 long threaded rods going down have handels on the ends, when they are wound op or down is puts pressure on the top of the mold allowing it to move up and down.

If you know what I mean, its hard to explain.
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