Epoxy Glues?

[rotorque]

Hi guys/girls,

I need a bit of help in selecting the right glue for a little project I have going.

My intention is to stack (glue) a couple of 18x18 inch sections of 19mm marine ply to make a 7inch thick chunk of wood. This will be turned on the lathe a little later on.

What is the best epoxy glue to use. I need this piece to be as strong as possible as it will be subject to some extreme loads.

Thanks in advance

paul

[zenwood]

Don't know about 'best', but Techniglue from Carbatec has been recommended to me, and I've recently started using it: it seems fine.

[bitingmidge]

Techniglue is actually an ATL Composites product, the makers of WEST resins, so should be available from anyone that sells the WEST line.

Epox-e-glue from http://www.boatcraft.com.au/ is I think a System Three product rather than a BoatCote one, or you can buy Boat Coat and mix in the glue powder to taste.

All options are excellent products, I think there are Boatcraft agents in Rocky, Townsville and Cairns, but phone order is pretty efficient from experience.

Cheers,

P

[Christopha]

I am curious (and nosey!).... What are you going to do with it?

[rotorque]

Hi Christopher (aka: Right Said Fred),

Mate, the chunks of ply will be turned down to become a set of multi vee belt pulleys for a reduction drive on a small homebuilt helicopter...... yeah yeah I know !!

You did ask....

It's not as bad as it sounds. Marine ply is surprisingly strong, relatively light, and easy to work with. It costs less than 2/3 of Ali and I don't have to worry too much about the wastage.

If your interested, the reduction drive is a modular component of the helicopter. I have an EJ22 subaru engine mounted horizontally going through a mercruiser TRS top box, this changes the drive to vertical. It powers a master pulley about 7" in diameter reducing to a 17" slave pulley. It is reduced further by the same ratio ie; from a 7" pulley on top of the lower 17" feeding back to another slave pulley 17" which is finally connected to the main rotor mast......... clear as mud.

It sort of explains why the glue needs to be fairly good. There is a fairly large sheer load on the ply when your spinning a 17" wheel at just over 1150 RPM. There is a flange supporting the pulleys that allow mounting bolts to go through the whole stack of marine which obviously take the majority of the load, but I need the glue to handle the lathe rpm as well. The pulleys will be strengthened with glass rovings in the grooves and a small bit of matting over the outer edges.

Cheers

Paul

[echnidna]

errr , how do you wear a parachute on a homemade helicopter without becoming mincemeat if you need to use it?

[Christopha]

balance?????

[Auld Bassoon]

errr , how do you wear a parachute on a homemade helicopter without becoming mincemeat if you need to use it?

Downwards facing, rocket powered, ejection seat (or should that be Shiiiiiiiiiiiiit!!!!!)

Cheers!

[rotorque]

Yep,

They need to be balanced...... the driver dosn't....

[Boatmik]

errr , how do you wear a parachute on a homemade helicopter without becoming mincemeat if you need to use it?

When you bail out you have to fall faster than the helicopter!!!

Boatmik

[NewLou]

Hi Christopher (aka: Right Said Fred),

Mate, the chunks of ply will be turned down to become a set of multi vee belt pulleys for a reduction drive on a small homebuilt helicopter...... yeah yeah I know !!

You did ask....

Paul

Recipee for a death trap M8 my advise get a lotto ticket.....................If you do get an overwhealming urge to go ahead with this please please consult an engineer:eek: :eek: :eek:

In the meantime you got anything you don't want tools etc etc

I thought I've seen everything on this thread Lou:eek: :eek: :eek: