OpenSCAD Build Volume Visualizer

for updates, use the version at https://github.com/dyanawu/openscad-buildbox

use in your OpenSCAD and call placegrid() with the following parameters:

vol: a 3-vector of build volume [x, y, z]
origin: a 2-vector of your origin point
grid: grid spacing in mm
type: 0 or 1: 0 for rectangular beds, 1 for round beds (if you use this, set z in vol as the maximum heigh that the nozzle can still reach the entire XY area - delta Zmax is odd-shaped. I may work on this.
vertalign: 0 or 1: 0 makes all 3 (XY, XZ, YZ) planes meet at [0,0], 1 makes all 3 planes meet at [maximum x, maximum y]

The preview image was called with:

placegrid( vol = [150,150,100], origin = [10,10], grid = 10, type = 0, vertalign = 1 );