i've just finished re-handling an old sak of mine (also a garden trowel), I have treated them by dipping them in boiled linseed for about 4 hours, as i am sure i had read somewhere to do this, i have wiped off all the excess, and they look good, the problem is i am still gettting an oily residue off the wood, do i need to seal them or simple leave them longer to dry, if the latter how long would you expect them to take to dry fully ?