HyperCube300 Customizable Bed Size

Instead of 300mm bed space, why not as big as you want? Using this kit, you can modify the original HyperCube300 v2 to be as big as the bed you can find, buy, mill, or steal.

THIS USES 10MM RODS INSTEAD OF 8MM. I wanted a bit more rigidity, and you probably should, too. If not, I'm sure you can use the original HC300V2 bottom rod mount and print a spacer or modify the bed mount file.

You're BOM for the total printer will have the 2020 extrusion and rods for the X and Y directions modified. Add (BED_SIZE - 300mm) to those extrusions' and rods' lengths. Also you need two pieces of extrusion the same length of the bed (give or take). Z isn't dependent on the bed size, but you're probably going taller anyways so do that. The bed mount has a big hole in it for a coupler, so you don't need a stepper with built in lead screw.

I used a CR-10 4S bed, so this can at least support that big of a bed, I don't know how effective it is, but I made it as robust as I could.