I'm planning a new Shaker style bench. However, I would like to have the ability to use a holdfast or two, which is a problem if there are cabinets under the bench. One alternative is to leave a gap between drawer boxes to allow clearance for a hold fast in the middle of the bench as well as to the left and right of the drawers. That obviously limits where the holdfast holes can be located.
The other choice is to leave a gap between the bottom of the bench and top of the drawer boxes.
So, two questions for holdfast users:
1. Where do you usually use them? Is left, right and center adequate? (Bear in mind there will be a leg vise on the left and an overhang on the right for an end vise.
2. If I really need the flexibility to have one anywhere, how much clearance will I need between the bottom of the bench and the top of the drawer boxes if the bench is 3 1/2" or more thick?
Thanks