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1 Produktbewertung

von lmsc72
04. Nov. 2017
Made a shim for the saddle gib on a Bridgeport mill.
I have an ancient Bridgeport vertical mill, on which the Y-axis ways are worn to the point where bottoming the saddle gib-screw at max adjustment is no longer enough to remove the last bit of deflection and play. I decided to try fabricating a shim of .010" brass for installation between the gib and saddle, to take up the exaggerated clearance from wear. The saddle gib is 10" long however; I found most brass being sold as shimstock is either too short to make a full length shim, or in bulk lengths far too long to be economical. I worried the auction hadn't specifically described this "K&S 4" X 10" X .010 Brass Sheet Metal" as suitable material for precision mechanical shims. The yellow metal exists in many different grades, with varying properties. However; checking the K&S website shows it listed as 260 alloy, half-temper brass, which is typical of dedicated-purpose brass shimstock. The sheet arrived perfectly clean and flat. I had no trouble forming what I needed. .010" dimension proved consistent enough and perfect thickness to put the gib back at top of its range of adjustment. I can recommend this as an affordable alternative to spending $$$ for bulk shim-specific material for just one single odd-sized application. Multiply that savings if you need to try different thicknesses. I added an .016" sheet to my order just in case.
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