concave bottom panel to account for levers

(see notes in TODO)

TODO.md

@@ -5,6 +5,7 @@ Notes for "next time".
 ## v2
 
 * I need at least 5mm, maybe 10mm, more height, to fit some of my levers like the Nobi Bullet
+    * I couldn't even fit a JLF without the compensations in v1 on the bottom panel
 * The panels' connection points could probably be a bit thinner to accommodate more bolts. A 20mm bolt barely clears the
   two panels and I don't like that kind of bolt connection.
 * Engraving some cosmetic stuff? Or maybe a place to mount other plates?

src/bottom-panel-concave.scad

@@ -0,0 +1,29 @@
+/* Copyright Brian Stephan 2023
+ *
+ * This file is part of bullet-system-stick.
+ *
+ * bullet-system-stick 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.
+ *
+ * bullet-system-stick 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
+ * bullet-system-stick. 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();