Veneer sites suggest it is essential to veneer or back the reverse side of any panel one veneers. for a speaker, this would imply someing on the inside face of the speaker panels, in my case bb plywood. the rational is to prevent differential moisture absorption. but i would be really worried about this creating voids or even loose edges to buzz. any experience wih whether this should be necesary?
True, I've also wondered whether a 0.6mm layer of veneer would have much effect on 18mm plywood. I have done veneered MDF cabinets, and only done one side, as in the UK veneer is expensive, I wanted to use quilted maple for my current project, it would have cost me over £400!!! Used pre-veneered (American Black Walnut) MDF instead.
To agree with others, vital if you're making something like cupboard doors, not needed for well braced box construction.
agreed
But what I`do is to cross glue the veneer grain against the plywood top layer grain (the side You want to glue the veneer on), if possible.
This helps to avoid cracks in the veneer.
The only purpose for 'balance veneer' is to prevent unbraced flat panels curling from differential tension arising from moisture movement. A 'balancing veneer' doesn't need to be the exact same quality as the finish at all - it can be anything with similar properties. Hence (at the low end!) you find melamine worktops with paper on the back of a chipboard core...
With good quality ply and a braced construction there's no need as already stated.
With good quality ply and a braced construction there's no need as already stated.
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