Bent Wood Lamination Glue

Adding a maximum of 8 powdered cornstarch by volume makes the glue more rigid and controls springback.
Bent wood lamination glue. Don t use yellow glue titebond for bent lamination. Because bent laminations are under constant stress they require glue that sets hard. When it comes to wood laminating pieces of plastics or another layer of wood are laminated to composites wood or plywood. With glue between each lamination a press is used to bend the bundle of laminations around a form.
Standard wood glue is not the best choice for bent laminations. If you are using yellow glue this does not leave a lot of time. Unfortunately it is not particularly rigid and does not have much open time. Then put against the original form.
There are many ways to construct a form and apply pressure. So the first order of business is to build the form followed by cutting the wood into lamination strips. The glue lines from jumping out. The wood used was hard maple one of the more difficult from both the glue adhesion and bending stiffness.
10 layers 1 8 at about 5 radius after the glue had cured for 24 hours on the form the parts were laid aside for at least a week. Pro glue unibond 800 i realize th. It also covers veneer laminating. Part 1 of a bent lamination glue up.
Quite a while back i did a series of glue tests on bent laminations. Use plastic resin glue or epoxy. Of these four glues urea resin and resorcinol achieve the most rigid glue line when cured. I ve got a lot of questions on laminating wood techniques and i notice a number of folks are interested in how to laminate plywood sheets.
The laminate parts need glue between each layer and to be clamped to the form before the glue dries. Yellow glue is slightly flexible and will creep over time leading to spring back. Once the glue dries the workpiece will hold it s new shape. Yellow glue sets soft and fast.
With domestic wood laminations the simplest and least visible glue is pva polyvinyl acetate yellow glue. I have found that a mix of 1 part water to 4 parts glue spreads quick leaves a thinner glue layer which squeezes out less and gives more open time all without risking the glue bond. What you need to use for bent wood lamination is 1 8 bending poplar plywood that comes in either long or short grain. While resorcinol has a.
There isn t one adhesive ideal for every application. It is also prone to glue creep a phenomenon in which the cured glue creeps out of the laminations over time resulting in unsightly raised glue lines. A couple of glues that seem to be good choices for bent lamination are.