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Premium Member Comment by Matthys on March 25, 2010 at 7:14

kk, i bought some aquadhere outdoor pva from bunnings yesterday.
i only want to make one inch of drop but im still a little worrried about whats gonna happen.
steve, when you say test it in the press, do u mean just put a single dry sheet in there then clamp it all up?
and then if it snaps then just fo for normal concave?

Premium Member Comment by Steve on March 25, 2010 at 5:30

I haven't tried it but 4mm ply will probably be too thick for a drop deck. You will most likely get cracking around the drop or the drop will spread out ( maybe not with a mdf mold, this happens with foam).

Maybe try pressing one sacraficial ply in your mold dry and see what happens. If there is no cracking or other problems go for it otherwise try a mold with just some nice concave for a topmount which the 4mm wil be more suited to.

Premium Member Comment by Adam on March 24, 2010 at 23:17

Don't have your mates let you do all the work.

Premium Member Comment by Matthys on March 24, 2010 at 20:38

work with the 4mm that is...

Premium Member Comment by Matthys on March 24, 2010 at 20:14

i have almost finished making a male/female mdf dim press like the one on vimeo, exept using mdf instead of foam. u recon thatll work?
otherwise im just gonna make one with and inch of concave and drop it thru.

Premium Member Comment by Adam on March 24, 2010 at 15:40

Matthys
go hard.
but 4mm thick will be hard to get the rad bends like glyde, should be able to make sick drop through and stuff. go all out, concave rather than drop downs with out concave. i have a bit of both but have fun.
my two cents

Premium Member Comment by Matthys on March 23, 2010 at 18:26

kk sweet, but you can definetally see that the across grain bend more lengthwise than the straight. wheras the lengthwise bends much more crosswise than the cross grain cut if u know what i mean.

Premium Member Comment by Steve on March 23, 2010 at 17:41

There is no need to cut plywood across the grain as the layers in between run across the grain. You only need to do that when using veneer. just a bit of info for next time

Premium Member Comment by Matthys on March 23, 2010 at 17:26

ok
Just went to mr plywood and bought 16 sheets of 4/300/1200mm ( two sheets of 1200 by 24000) marine ply. apparently it is pacific maple.
it looks darker and redder than normal wood but it seems to be pretty sturdy.
me and my friends are planning on making 4 boards.
i just need to go to bunnings and buy the glue, whats the best value for money?
were going to glue 3 or 4 sheets together.
and r going to be using a ghetto dim style press. with wood from around the place. we dont know if were going to make a dropdown or just a topmount mould.
we got the guy to cut half of the boards along the grain and half across. for ease of moulding.

i really want to make one like the glyde dropdown but dont know much about the wedge/ dewedge.
were probs going to go for a few layers of glass on the bottom to strengthen if it doesnt hold up well enought.
any thoughts?

Comment by Ryan 'RY RY' Peterson on March 21, 2010 at 20:05

id be more than happy to test out any of ur ideas dylan.
:D

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