After quite a number of requests from members here and You Tube I have decided I'll send this extrusion material to anyone who needs it. Apparently it's not available in the US or Canada. For US$30 I'll supply sufficient lengths of both the 6mm and 5mm extrusion, shipped anywhere in the world for one tablet. Email me at firstname.lastname@example.org or PM me your email address and I'll send you a PayPal invoice for $30 and upon confirmation of funds I'll send the extrusion straight away. You will need to supply the core-flute or foam core board.