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Why would I need to know the 'extrusion direction' of Lexan? Answered

I bought a small square of Lexan (sheet polycarbonate) to experiment with and noticed on the clear, protective laminate the words: "extrusion direction" and an arrow.

I will most likely use this sheet for thermo -forming, but would like to hear any thoughts on how the extrusion direction might affect drilling, cutting, etc.



1 Replies

AndyGadget (author)2011-07-10

The extrusion direction is relevant if you're bending the Lexan. It's more likely to break if you bend along the 'grain'. (Think about the bending strength of a thin piece of wood in both directions.)
I'm no expert on this, but I think you'll be OK with thermo-forming as it relaxes the stresses in the sheet.

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