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Reply by worldgeezer

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Posted on repairing 40 yr old marquetry coffee table

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worldgeezer

37 posts in 147 days


#1 posted 02-03-2019 03:53 AM

Hi Paul,
Ok, we’re well beyond my pay grade on this one.
A quick internet search on crossband veneer … appears to be (essentially) applying a cross-grain layer of veneer underneath the “show” veneer. If so, that makes a lot of sense to me.

I don’t know whether this curve was already present when this coffee table was brought to me, or whether it’s a recent issue.

What I’m working with … substrate is 1/2 inch plywood: 3 internal layers of just over 1/8 inch each, then a top and bottom exterior layer of just under 1/8 inch each, (probably sanded) to reach the 1/2 inch overall thickness. The grain-direction of the top and bottom pieces run parallel to the length of the substrate.

So, “cross band” in this instance means: apply several strips of this wood or veneer to the bottom (the underside) of the substrate.

Most of the veneer (all 8 of the larger pieces) on the surface runs parallel to the length

The “theory” seems to be:

because the curve is 90 degrees to the length,
glue several strips of veneer running across the width. This seems to make sense because it runs 90 degrees from the direction of curve.

Q: Would the actual width of those strips be of significance?

Q: What type of wood is recommended? (If you can list several, it increases the possibility that I can find one locally).

Some of those strips may cover some of granddad’s writing in which he describes the various kinds of veneer in this pattern. Small price to pay to try to stop or at least slow down the curving.

Then, when those cross-band strips are glued and dried, apply several coats of shellac as sealer across the entire bottom. At present, the bottom is completely unfinished.

Thanks again for the considerable help.


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