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Am I being too gentle milling?

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Rod Neep08/05/2016 09:44:30
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59 forum posts

Thanks for that Jason. The whole thing was fascinating breakfast reading.

Tim Stevens09/05/2016 18:33:11
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1779 forum posts
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The metal you show looks like 'black' steel as used for welding structures. This helps to explain the burrs you noted. I have found inclusions of slag in such material - visible strands about the size of a pencil lead. This is no problem for welders (who tend to cut with shears or angle grinders), but it can wear cutters quickly.

You might get a better finish and longer tool life if you seek out 'free-cutting bright mild steel'.

Cheers, Tim

Rod Neep09/05/2016 18:45:03
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59 forum posts

Lesson learned, Tim. Thanks.

That's what I thought I had ordered, but as these pieces were to be just clamping plates I decided to just go ahead with them.

Cheers

Rod

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