Chris Knight":1tcds2b1 said:Re the question on the thickness of bench top in which they operate - my bench has a 4 1/2 thick top and I use Gramercy holdfasts in 3/4 inch holes. They would not hold in my top without some mods. I first tried what I had seen advised elsewhere which was to use coarse sandpaper to roughen the holdfasts (using the sandpaper in such a way as too create annular scratches). This worked OK but the same piece of advice went on to say that after a while it was necessary to roughen them again and again.. so the author of the suggestion said he wished he had counterbored his holes. I have done that and counterbored my holes to 1 inch diameter from the underside of the bench top to a depth of 1 1/2 inches thus leaving 3 inches for the holdfasts to work in - which they do, perfectly and without the need for roughening them.
Richard T":1uyqiu1p said:Ok Trizza, I'll do my best. PM me the address and I'll try to remember how to do paypal stuff ..
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