Just one.  Win M70 Fwt from the early 90's I did last winter.  Had a little spot of hot glue looking bedding from the factory and I always wanted to try it.  I got stockmakers screws, clay, and Acraglas from Brownells. Hogged out the stock, packed in the action voids with clay, went for it. I did the whole action, not just the lug.  Pretty easy, just have to be careful and thorough.  I used aluminum pillars and Acraglas gel for a stress free perfect fit in theory.  Turned out good, fit is perfect, and I've eliminated a variable in accuracy.