maybe some answers are in australian conferences, where the specie is more used.

Generally, because of the embedded resins and oils found in hardwoods, they are more difficult to glue as reliably as softwood species. Eucalyptus is categorised as a hardwood. Softwoods such as Pinus radiata are generally less problematic in glued connections.

Sellers, Terry. Gluing of eastern hardwoods: a review. No. 71. US Department of Agriculture, Forest Service, Southern Forest Experiment Station, 1988.

Kishan Kumar

Jean-Luc Coureau

Thank you so much Kristopher

I think that the reason is the high extractive content of eucalyptus wood