diff --git a/src/bottom-panel-concave.scad b/src/bottom-panel-concave.scad
deleted file mode 100644
index 598641d..0000000
--- a/src/bottom-panel-concave.scad
+++ /dev/null
@@ -1,29 +0,0 @@
-/* Copyright Brian Stephan 2023
- *
- * This file is part of the Buildable Stick System.
- *
- * The Buildable Stick System is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by the
- * Free Software Foundation, either version 3 of the License, or (at your
- * option) any later version.
- *
- * The Buildable Stick System is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * the Buildable Stick System. If not, see <https://www.gnu.org/licenses/>.
- */
-
-include <components.scad>
-use <bottom-panel.scad>
-
-module bottom_panel_concave() {
-	difference() {
-		bottom_panel();
-		translate([0, 0, top_plate_z/2]) cube([top_plate_x*2/3, top_plate_y*2/3, top_plate_z], center=true);
-	}
-}
-
-bottom_panel_concave();
diff --git a/src/bottom-panel-solo-concave.scad b/src/bottom-panel-solo.scad
similarity index 93%
rename from src/bottom-panel-solo-concave.scad
rename to src/bottom-panel-solo.scad
index 1e5283a..e94d056 100644
--- a/src/bottom-panel-solo-concave.scad
+++ b/src/bottom-panel-solo.scad
@@ -18,11 +18,11 @@
 
 include <components.scad>
 
-module bottom_panel_solo_concave() {
+module bottom_panel_solo() {
 	difference() {
 		bottom_plate_with_overhang();
 		translate([0, 0, top_plate_z/2]) cube([top_plate_x*5/6, top_plate_y*5/6, top_plate_z], center=true);
 	}
 }
 
-bottom_panel_solo_concave();
+bottom_panel_solo();
diff --git a/src/bottom-panel.scad b/src/bottom-panel.scad
index 1b788e7..f886daa 100644
--- a/src/bottom-panel.scad
+++ b/src/bottom-panel.scad
@@ -19,7 +19,10 @@
 include <components.scad>
 
 module bottom_panel() {
-	mirror([0, 0, 1]) topplate();
+	difference() {
+		mirror([0, 0, 1]) topplate();
+		translate([0, 0, top_plate_z/2]) cube([top_plate_x*2/3, top_plate_y*2/3, top_plate_z], center=true);
+	}
 }
 
 bottom_panel();