Many students of Paul Sellers have purchased a Thor 712R hammer on his advice. I am one of those.
You can purchase the hammer with a nylon or varnished timber handle. Naturally I chose the timber one. Whilst it’s a lovely hammer in many regards, the heavily varnished handle never felt all that nice in the hand. So a little while ago I sanded off the varnish, cleaned the head up a little and gave it a several coats of boiled Linseed Oil over the course of a week.
It feels a lot nicer now. Smooth and silky timber without the clinginess of varnish. For what amounted to less than 20 minutes or so of effort, it was well worth it.