Maybe some of you have come across
http://www.thingiverse.com/thing:12864 by mesheldrake. AFAIK nobody has tried using his OpenSCAD scripts to build one of these yet, but I could be misinformed.
I've thrown caution to the wind, and decided (mostly out of necessity) to scale it up large, but keep the 2020 profiles. It's been a couple of months since I generated the BOM, and I don't recall the exact work area dimensions, but I think it was something like 24" x 38" x 12". It may have some rigidity issues that will have to be addressed.
I started putting the frame together this evening, but my laser tube is held up in customs, and has been for over a month. At this point, I doubt they will be delivering it. Usually, when it takes this long, it means the F***ed it up.
I had 8020INC quote me on cutting the panels out of Alumalite, and they came back with $900.00! I don't think so 8020!
Here is the BOM, as generated by the script:
ECHO: "GANTRY"
ECHO: " MakerSlide: 1 x 1465mm (57.67716535433071in)"
ECHO: " MakerSlide: 2 x 1221mm (48.07086614173229in)"
ECHO: " EconoBelt: 1 x 3048mm (cut) (120in, rounded up)"
ECHO: " EconoBelt: 2 x 2336.8mm (cut) (92in, rounded up)"
ECHO: " (shaft src): 1 x 736.5999999999999mm (29in)"
ECHO: " (shaft src): 1 x 685.8mm (27in)"
ECHO: "Z TABLE"
ECHO: " 2 x HFS5-2020-1342 1342mm (52.83464566929134in)"
ECHO: " 2 x HFS5-2020-1031 1031mm (40.59055118110236in)"
ECHO: "Z TABLE PANEL"
ECHO: " 1 x C19010 1342mm x 1071mm (52.83464566929134in x 42.16535433070867in)"
ECHO: "Z LEADSCREWS"
ECHO: " 3 x B18009-xxxx (0.25in,20tpi threaded rod) 407.2mm (16.03149606299213in)"
ECHO: " 1 x B18009-xxxx (0.25in,20tpi threaded rod) 458mm (18.03149606299213in)"
ECHO: "Z CLOSED BELT"
ECHO: " EconoBelt: 1 x B28035 (loop timing belt) : close to 3866.481824369909mm (~152.2in, rounded)"
ECHO: "FRAME"
ECHO: " Misumi 2040:"
ECHO: " 2 x HFS5-2040-1722 1722mm (67.79527559055119in)"
ECHO: " Misumi 2020:"
ECHO: " 4 x HFS5-2020-514 514mm (20.23622047244094in)"
ECHO: " 3 x HFS5-2020-1722 1722mm (67.79527559055119in)"
ECHO: " 3 x HFS5-2020-1492 1492mm (58.74015748031496in)"
ECHO: " 1 x HFS5-2020-1487 1487mm (58.54330708661418in)"
ECHO: " 7 x HFS5-2020-1221 1221mm (48.07086614173229in)"
ECHO: " 1 x HFS5-2020-230 230mm (9.05511811023622in)"
ECHO: " 1 x HFS5-2020-90 90mm (3.543307086614174in)"
ECHO: " 1 x HFS5-2020-364 364mm (14.33070866141732in)"
ECHO: "COVER"
ECHO: " 2 x HFS5-2020-1487 1487mm (58.54330708661418in)"
ECHO: " 2 x HFS5-2020-1101 1101mm (43.34645669291339in)"
ECHO: "COVER WINDOW PANEL"
ECHO: " 1487mm x 1141mm (58.54330708661418in x 44.92125984251969in)"