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balsa wood

Common Defects

The blocks can sometimes have bark on a corner or pith (center of the tree).  You can get slivers from the bark quite easily but rarely from the balsa itself.  The center of the tree is like weak foam or a rice cake.  The blocks must be cut around these two types of defects before kiln drying.  The trees are first cut to a length good for the size they are trying to end up with.  Then they are cut on a 4-foot sawmill blade into rough block sizes.  The blocks are either kiln dried and loaded into a container or the supplier mills them somewhat square and to size before adding straps and putting the bundles in a container for the US.

 

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Balsa wood defects Balsa Grain Classification

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