Inquiry (采购产品): diamond impregnated drill bits Need to accomplish the following: Drill 40 holes Approx. 1" to 1 !/2" in depth Material: Black Marble (Approx. 2" Thick) Hole Diameter: 3/16" Tools available: 3/8" VSR Hand Drill 3/8" VSR Hand Hammer Drill Job Description: Mounting brass letters for sign which have 1/8" threaded studs Current progress:Tried 2 brands of common masonry bits. Cannot get them to "bite" into the granite. I've drilled concrete, brick, sandstone, and marble using a masonry bit, but this is a different ball game. Your help would be greatly appreciated! **** Hidden Message ***** Rick English 1726 English Rd. Forsyth, GA 31029 USA Company: English Signs & Awards Title: Owner Phone: 478-994-1736 Fax: 478-994-1736 E-mail: grenglish@bellsouth.net **** Hidden Message ***** grenglish@bellsouth.net
