from what I can google, you need to remove some of the softer grain leaving the harder stuff behind.
Now, at the risk of really confusing you, the softer grain is early wood and the harder late wood -- a growing pattern observed in northern hemisphere species, but not necessarily repeated in Australian timbers which tend to more uniform hardness throughout the year. (I hope I've got the early - late wood sequence the right way round)
techniques discussed for removing the softer grain include:
sand blasting
a propane torch
__________________ regards from Sydney ian |