Review on Precision Engineered SHARS Steel Parallels Pair 303 7203 for Accurate Machining by Joseph Scalea

Just got them recently. After measuring, I found that the parallel surfaces are excellent and within specification. But as another customer pointed out, they are not flat and can be warped to a length of 6 inches with a maximum "bend" of between .050 and .060. In many cases it is less for each piece. I think the Chinese didn't calculate. how to flatten the material and remove the warp. This is the only problem I found with them. Otherwise, I look forward to many years of use and regret not having bought it for a long time, because I really could have used it. Beat