MRS/LRS Tapered Shim Machining

[idokie]

We are trying to machine a 4"x7" tapered shim out of 7075 T76 .063 CLAD material. We haven't been able to locate any MRS/LRS material, and the non-stress relieved material warps during machining. We are trying to taper from .063 to .015. Does anyone have any suggestions for machine feeds and speeds, tooling? Any help greatly appreciated.

 

[aviat]

You could consider chem milling. It is used for situations like that.