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The perfect proportion between volume and surface area

The new Tele SF from Chemex

For molding lines with a low flask height, the new tele sphere feeder from Chemex can be particularly advantageous due to its low height. The feeder has a perfect ratio between volume and surface area. In what is known as the telescope effect, the feeder material breaks at the predetermined breaking point, causing the top of the feeder to slide over the bottom, providing additional compaction of the molding sand under the sleeve At the same time, it can be ensured that shrinkage cavities form outside the casting.


The advantages of the tele shell feeder:

  • Thermodynamically most favorable shape is very close to the casting in the compacted state
  • Perfect ratio between volume and surface
  • Easy positioning on the pattern plate
  • Telescope effect: upper part slides over lower part
  • Additional compaction of the sand under the sleeve
  • The halves are held together by a band, without glue
  • For molding lines with a low flask height

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