add some models

models/gridfinity-cyclinder-holder.µcad

@@ -0,0 +1,22 @@
+use std::ops::*;
+use std::math::*;
+use std::geo3d::*;
+use gridfinity::*;
+
+mod gridfinity;
+
+fn getOffset(units: Integer) -> Length {
+    if units > 1 {
+        return 5.1mm;
+    } else {
+        return 3.2mm;
+    }
+}
+
+part Holder(diameter: Length) {
+    units = int(diameter / BasicUnitXY) + 1;
+    Box(gridsX = units, gridsY = units, gridsZ = 4, magents = true) - Cylinder(radius = diameter / 2, height = 100mm, offset = getOffset(units));
+}
+
+#[resolution = 200%]
+Holder(60.5mm);