Giant hot wire cutter

[charlieuk]

and this is what I am wondering about for rails

http://www.cncrouterparts.com/linear...ent-p-100.html

however I cant help but think if I use extrusion there must be a way I could use the aluminum as the rail and have some sort of rubber wheel as the forces are going to be so low along with the weight of the gantry being pretty small all so. I am aware of the v rail aluminium but I don't think it comes in 6m lengths.

then there are the wheels you can get from kjn but not sure if they would be up for the job and there are quite pricey considering you would need probably 6 or 8 per rail.
http://www.aluminium-profile.co.uk/a...40.html#SID=71