diff --git a/gridfinity-rebuilt-base.scad b/gridfinity-rebuilt-base.scad
index d422ba2..cb78911 100644
--- a/gridfinity-rebuilt-base.scad
+++ b/gridfinity-rebuilt-base.scad
@@ -28,6 +28,7 @@ echo("=====");
 // enable_scoop:    scoop toggle for all compartments. see cut()
 module gridfinityEqual(n_divx=1, n_divy=1, style_tab=1, enable_scoop=true) {
     gridfinityCustom()
+    translate([0,0,-d_height-h_base])
     for (i = [1:n_divx]) 
     for (j = [1:n_divy])
     cut((i-1)*gridx/n_divx,(j-1)*gridy/n_divy, gridx/n_divx, gridy/n_divy, style_tab, enable_scoop);
@@ -38,7 +39,7 @@ module gridfinityEqual(n_divx=1, n_divy=1, style_tab=1, enable_scoop=true) {
 module gridfinityCustom() {
     if (gridz > 0) {
         difference() {
-            color("firebrick") block_bottom(d_height-0.1);
+            color("firebrick") block_bottom(height_internal==0?d_height-0.1:height_internal);
             children();
         }
         color("royalblue") block_wall();
@@ -66,11 +67,53 @@ module cut(x=0, y=0, w=1, h=1, t=1, s=true) {
 // Translates an object from the origin point to the center of the requested compartment block, can be used to add custom cuts in the bin
 // See cut() module for parameter descriptions
 module cut_move(x, y, w, h) {
+    translate([0,0,d_height+h_base])
     cut_move_unsafe(clp(x,0,gridx), clp(y,0,gridy), clp(w,0,gridx-x), clp(h,0,gridy-y))
     children();
 } 
 
 
+
+module block_negative_chamfer(depth = 10, top = 0, bot = 0) {
+    bc = abs(bot);
+    tc = abs(top);
+    
+    hull() {
+        linear_extrude(2*(depth), center = true)
+        offset(-bc)
+        children();
+        
+        linear_extrude(2*(depth-bc), center = true)
+        children();
+    }
+    
+	if (tc != 0)
+    translate([0,0,tc])
+    block_negative_chamfer(depth = tc*2, bot = tc, top = 0)
+    offset(delta = tc-0.01)
+    children();
+}
+
+module block_negative_fillet(depth = 10, bot_fillet = 0) {
+    bf = abs(bot_fillet);
+    
+    block_negative_chamfer(depth, 0, bf)
+    children();
+    
+    minkowski() {
+        linear_extrude(2*(depth-bf), center = true)
+        offset(-bf)
+        children();
+        
+        if (bf > 0) sphere(r = bf);
+    }
+}
+
+module block_negative(depth) {
+    linear_extrude(2*depth, center=true)
+    children();
+}
+
 // ===== Modules ===== //
 
 module profile_base() {
diff --git a/gridfinity-rebuilt.scad b/gridfinity-rebuilt.scad
index 1459eb9..902481c 100644
--- a/gridfinity-rebuilt.scad
+++ b/gridfinity-rebuilt.scad
@@ -60,6 +60,8 @@ gridz_define = 0; // [0:gridz is the height of bins in units of 7mm increments -
 // the type of tabs
 tab_style = 0; //[0:Full,1:Auto,2:Left,3:Center,4:Right,5:None]
 
+// overrides internal block height of bin (for solid containers). Leave zero for default height. Units: mm
+height_internal = 0; 
 
 // ===== Commands ===== //
 
diff --git a/gridfinity-spiral-vase/gridfinity-spiral-vase.scad b/gridfinity-spiral-vase/gridfinity-spiral-vase.scad
index 33f04a2..3812472 100644
--- a/gridfinity-spiral-vase/gridfinity-spiral-vase.scad
+++ b/gridfinity-spiral-vase/gridfinity-spiral-vase.scad
@@ -2,10 +2,14 @@
 $fa = 8;
 $fs = 0.25;
 
-// ===== Commands ===== //
+// ===== COMMANDS ===== //
 
 color("tomato")
+
+// Generate a single base
 //gridfinityBaseVase();
+
+// Generate the bin
 gridfinityVase();
 
 // ==================== // 
@@ -36,7 +40,7 @@ n_divx = 2;
 
 /* [Toggles] */
 // toggle holes on the base for magnet
-enable_holes = false; 
+enable_holes = true; 
 // round up the bin height to match the closest 7mm unit
 enable_zsnap = false; 
 // toggle the lip on the top of the bin that allows stacking