What is a Duplex and Max #6 Biscuit?

A Porter-Cable joiner info indicates "seven-position rotating depth stop works for standard #0, #10, #20 as well as Simplex, Duplex, and Max (#6) joinery".

It seems simplex is made by a high end manufacturer Lamello.

Are these products no longer offered? Is that why an answer isn't more readily available?

  • It might help if you indicate which model Porter-Cable biscuit joiner you're talking about. Even better if you include a link to the documentation. – FreeMan Apr 30 at 17:39
  • 2
    Is there a woodworking problem you are trying to solve ? – Alaska Man Apr 30 at 17:40
  • I had always understood 'max' to be the maximum stroke. – Aloysius Defenestrate May 1 at 16:36

I'm reading that as a list of three distinct items, of which the third is "Max (#6)". i.e., not two items that are Simplex; mostly because "Simplex Duplex" makes no sense.

They probably mean an "S6" biscuit, which is dimensioned 85 x 30 x 4mm. The internet tells me this is a proprietary size, but it looks like Porter-Cable supports it.

That is one large biscuit.

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