VBD (Very Big Delta)

thingiverse

I designed a VBD Very Big Delta. The original concept was to go with PETG arms secured to laser cut wood. Instead I designed a Step file and ordered 1/4 inch thick 6061 aluminum plate from emachine shops. I could do a follow on build (both wider and taller using C Channel), I have enclosed a picture of a plate which could accommodate C channel and then 4040 cross members. The printer has a usable radius of 380mm and depending on how you align the part more could be obtainable. The key feature of the build is the plate. There are approximately thirty 3d printed parts in the build and two laser cut wood plates. I am offering two approaches. 1) Use a flat plate like the Tevo big delta (I would go wider next time) 2) Use an angle plate and extrusion. (pictured, you can go as wide as you would like) Because of Duet I don't see any problems building big or wide. .5mm Tolerances exist in the 5.5mm plate holes, in the curvature of the extrusion and how the linear rails are mounted, in the flatness of the bed. Tall can be achieved by cross bracing. In my case I used carbon fiber tubes to add rigidity. Duet software will absorb any errors (or tolerances) in a build this size. Some important observations. -There is not a whole variety of very big parts available ----either make your own (arms) ----use a stock part like the 400x400mm square bed illustrated -Lots of folks are using very cheap SSR's; I would suggest going to Digikey to buy a $45 SRR that is UL listed. -Grounding and fusing - If you buy a printer or make one make sure its grounded. Make sure to put in line fuses where appropriate, make sure you ground the bed. Don't use a cheap power supply --Its more fun to build a printer than it is to buy one.