[Pantu]

Hi Jan,

both, the Alps as well as Knitter have a too thin shaft (4mm)to use them as dual concentric. I done it with 2 knitters using a 90 degree gear made out of 2 tooth wheels. So both rotaries are 90 degrees mechanically shifted.
Of course could get you ten of and send them to Holland.

Will try to get downtown tomorrow to buy ´em.

Just let me know where to ship.

Best rgds

Peter