Originally I was thinking of using .58 core grips over .60 butt shafts to get a thicker grip but the .58 core grips usually run about 7 grams or so heavier. Per the Hirekogolf grip calculator, a layer of build up tape runs .0035" so wrapped around the shaft it would reflect a .007" overall buildup. I have some old 2" wide masking tape and doubled over it measures .0095" so obviously not all buildup tapes are created equal.
Knowing there will be a final two-way tape added for adhesion, how many layers of build up tape can be put on a shaft before it gets "spongy" or not advisable? Thanks.