Imagine a 1000mm length of C-Beam as a gantry above a cutting table. a Chinese laser tube is 50mm (2in.) diameter so rather than buying expensive mounting kits and fiddling with the alignment etc. I plan on just resting it on one end of the C-Beam using a rubber gasket or something to cushion it against the C-beam. It will them aim down the length and once mounted becomes a "modular unit" I can remove and put back with little realignment. I could leave it like that and cut the c-beam off or use the rest for the x axis of my laser. The Natural C shape of the Extrusion will cradle the laser tube making it shoot straight along its length 15 mm above its surface straight down the middle. That solves my 2 axis of alignment issue instantly. I can use my Epilog laser cutter to make some mounting clasps and slight adjustment screws etc for super fine tuning. Here is where it gets cool, now I just mount a mini v gantry and a 45 degree mirror in the center of it and drill the hole in the center of the gantry bigger. Then I will drill a channel about 20-25mm wide right down the middle of the C-beam at the bottom. This will let the laser beam have one mirror aiming straight down to the lens and cutting area. Or I could flip the C-beam/Laser module upside down and mount it and wouldn't need to cut the bottom out of the C-beam. Anyway cutting out The middle and leaving the ends intact where it mounts and under the laser etc would be fine structurally. Then I can just have the table move in the y axis. I will only be cutting 3mm acrylic so its nice and slow movements 7-10mm or so max. I even thought of a way to have a vector table slide in and out like a keyboard drawer so I can have one preloaded and swap them out lock it in place and hit start. then fool with all the cut out pieces on the other table while it cuts loosing no time. I even thought of way to have a roller system to feed longer sheets in etc for longer cuts than the table can hold. Super Bonus~! All I have to do is mount another laser tube on the other side facing in and a second gantry plate identical to the first aiming the laser beam down and one gantry is master one is slave and I can move the slave one 6 inches, 9 inches, 12 inches, at from the first to make 2 cuts at once in a "ganged" style cutting my work time in half literally. I could of course just add a second double laser gantry to it and its now 4x my output all adjustable spacing in both x and y axis scalable up to more. The best part is I can still move the x axis real fast for engraving and also have 2 full power laser heads engraving not a split beam dual head setup where the power is halved.