Big Wood Cubes For Sale Birch Versus Fir ~ What Would Be The Difference In A Craft?

Birch versus Fir ~ What would be the difference in a craft? - big wood cubes for sale

I'm trying a boat that I copy now seen. They used 2 "Birch bucket a mystery. The 2 bucket" fir only I could find on the Internet. Knowing nothing of the woods, I do not know if it would make a difference? Has anyone out there know? Thank you!