Ok, for plastic tubes or pipes i use EstreetPlastics, i will look at your supplier when i get time.
For the top and bottom polycarbanit plates i just use a Table Saw and Trim Cutting Blade to cut the polycarbanit sheets to my specifications. i found you have to pay more when buying the measurements that you need, so the table skill saw paneling blade for the table saw is like 5 bucks at walmart.
im sorry all my post suck guy's, im working on the fly doing other daily things to! just checking in.