My father in laws new hobby

My father in law is a supremely talented woodturner and woodworker. I asked him when he started if he could make a drop spindle -several incarnations later this is his latest creation. Its pure Purpleheart wood and is actually that amazing colour. And this thing spins forever with a flick of the wrist. He's making more for me to sell for him. This is if I can be parted from them LOL