Re: Veneering Questions
Veneering is fantastic. It opens up a whole new world. Some smaller projects to practice with is a great way to learn some of these new techniques. And if you find this really is something you enjoy buy a vacuum system.
The problem with PVA glue is that it causes the veneer to warp. The thicker the veneer, the less it will warp. Having said that I have used PVA glue with thin veneers (1/32") without problem. DON'T apply the glue directly to the veneer, just the core. Another thing when using PVA glues, don't apply it too heavy. And for each veneer there is a slight difference in what is too heavy. Open pore and burled woods will bleed glue if it's too heavy, causing finishing problems. You can also use other types of glues (I'm guessing the one they recommended was their product, but I don't know that) like Unibond 800, etc.
As for cores, it depends. I have used PC (cheap, pretty flat), MDF (very flat, weak screw holding ability, sometimes weak joinery), solid (can be very tricky...not for beginners), baltic birch (somewhat flat, very strong). All have their strengths and weaknesses.
And yes, apply the same, or very similar, veneer to both sides. The species can be different, but they must be the same thickness and have similar characteristics. Also apply them in the same grain direction.
You can use a large, flat board with lots of cauls and clamps, but it is very tricky at that size. Do at least one dry run to make sure you can make it happen quick enough.
Then you have the issue of actually cutting the veneer with the bandsaw. I won't get into that here, as it's a whole article....One that we will cover in the magazine over the next while.
Hope that helps. I've really only skimmed the surface of this topic, but hopefully you have enough info to get started. That reminds me.....maybe even do a practice panel with some cheaper species first, depending on how valuable you feel the Peruvian walnut is.
Let us know how it goes. Take some photos if you can.
Editor - Canadian Woodworking & Home Improvement