No Clue about Knots and allergies,But I can tell you your tools need to be sharper.
I have been reading up a bit on turning and I guess Purpleheart will dull your tools QUICKLY!
Might need to sharpen them multiple times for one turning?
I have been reading up a bit on turning and I guess Purpleheart will dull your tools QUICKLY!
Might need to sharpen them multiple times for one turning?
That may be true as some woods such as teak may seem easy to turn and machine but do to High silica content dull tools.
A sharp tool will cut a near perfect finish and not Gouge the wood as above.