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  1. KatRawlings

    Improving surface finish of polypropylene

    Hi everyone, I am trying to improve surface finish on polyproylene. We need a surface roughness of 0.8 microns (Ra) or better. The part is going to fully machined on a CNC router and there are lots of veins and gulleys. It has a 2.5m diameter. Any suggestions for improving surface finish of...
  2. KatRawlings

    Improving Surface Roughness of Polypropylene and Measuring Surface Rou

    Hi everyone, I was just wondering if anybody can offer me any tips or advice for a project I am working on at the moment. We have been carrying out shot blasting using various abrasives to improve the surface roughness of some polypropylene parts that we are making for the medical industry (1m...
  3. KatRawlings

    Testing for Aluminium Oxide

    Hiya everyone, I was just wondering if anybody knows how I can test for the presence of aluminium oxide? We have been shot blasting plastic with an aluminium oxide abrasive, so bits of this abrasive will be left on the surface of the plastic. We believe that we can remove this aluminium oxide...

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