Simonas and pwf had a mishap – they broke a steel tap inside a CNC-machined aluminium part for the camera crane.

See the poor hole at the upper right?

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pwf harnessed the power of chemistry to get rid of the tap. He used potassium alum, bought in bulk from Mavis:

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A hot solution of it corroded the steel in several hours, and he was able to take the tap out.

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