1800 mm X-Carve upgrade

I have seen an upgrade for x carve from 1000x1000 mm to 1800x1000.

Can anyone give me advices for that upgrade?
Anyone know were can I purchase that 1800 mm rail?
I searched in two web site stores and they didn’t had it available



the makerslide was once available from Inventables in 1800mm… A couple of overseas vendors sell it in 2m lengths, but i am just going to add 750mm to each of my rails, with dowels and a wide support brace at the joint