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Drum Engraving: Precautions

Source:ZS Machinery Time:2016-08-16 Click:160 Times

The drum is the heart of a sublimation transfer machine, and every operation on it has to be treated as precision work.

  • Check concentricity before you start. An out-of-round drum cannot be corrected later.
  • Keep the surface clean. Swarf or grit left on the surface during work will be pressed into the finish.
  • Control the cut evenly. Uneven cuts create high spots, and a high spot prints as a mark on every revolution.
  • Polish in stages. Skip a grade and the surface will not be fine enough for even transfer.
  • Inspect under light before assembly. A surface that looks acceptable in daylight can still show marks once the machine is running at temperature.

The cost of getting this wrong is not a scrapped drum – it is thousands of metres of fabric with a repeating mark on it.

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