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  1. gowrishankarz

    Distortion control

    I came across a product called Black Magic (http://www.distortioncontrol.com/Black%20Magic.pdf), for reducing distortion during machining. I was wondering if anybody here have used this product. If so, please post your review. Thank you
  2. gowrishankarz

    4140 straightening problem

    Hello everybody, We are having a lot of problems with heat treating round 4140 material. This part is .5" in dia & 25" long. It has a V groove machined into it. We just need the edges of the V groove to be hardened to about 55 Rc. Right now we are flam hardening the edges & this makes the part...

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