diff --git a/2d/b17-lit-base/b17-cutaway-frame.svg b/2d/b17-lit-base/b17-cutaway-frame.svg
new file mode 100644
index 0000000..15a4916
--- /dev/null
+++ b/2d/b17-lit-base/b17-cutaway-frame.svg
@@ -0,0 +1,65 @@
+
+
+
+
diff --git a/2d/b17-lit-base/b17-lit-base.scad b/2d/b17-lit-base/b17-lit-base.scad
new file mode 100644
index 0000000..6f4c7b3
--- /dev/null
+++ b/2d/b17-lit-base/b17-lit-base.scad
@@ -0,0 +1,96 @@
+include <../box/box.scad>
+
+thickness = 3.25; // 3.25mm = 1/8" medium draftboard
+spacing = thickness/2;
+
+outer_width = 7.25*inch;
+outer_depth = 2*inch;
+outer_height = 1*inch;
+
+//notch_margin = 3*thickness;
+//notch_size = golden_ratio*thickness;
+
+notches_w = -1; //round((outer_width - 2*notch_margin) / (2*notch_size));
+notches_h = 1; //round((outer_height - 2*notch_margin) / (2*notch_size));
+notches_d = -1; //round((outer_depth - 2*notch_margin) / (2*notch_size));
+
+inc_bottom = false;
+
+module top_side() {
+ difference() {
+ top_side_base();
+ translate([0,10,0]) square([6.5*inch - 2, 5.0], center=true);
+ translate([-6.625*inch/2,0,0]) rotate([0,0,90]) holes(2, 1.5*inch, thickness);
+ translate([ 6.625*inch/2,0,0]) rotate([0,0,90]) holes(2, 1.5*inch, thickness);
+ }
+}
+
+module back_side() {
+ difference() {
+ back_side_base();
+ translate([3*inch,-0.25*inch,0]) hull() {
+ usb_width = 8.5;
+ usb_height = 3.5;
+ translate([-(usb_width-usb_height)/2, 0, 0]) circle(r=usb_height/2, $fn=32);
+ translate([ (usb_width-usb_height)/2, 0, 0]) circle(r=usb_height/2, $fn=32);
+ }
+ translate([3*inch,0.05*inch,0]) square([11.55, 4.1], center=true);
+ }
+}
+
+module side_support() {
+ difference() {
+ hull() {
+ translate([-0.5*inch, 0.25*inch, 0]) circle(r=0.25*inch, $fn=32);
+ translate([ 0.5*inch, 0.25*inch, 0]) circle(r=0.25*inch, $fn=32);
+ translate([10, 1.5*inch, 0]) circle(r=0.25*inch, $fn=48);
+ translate([0, -0.25*inch/2 + thickness, 0]) square([1.5*inch, 0.25*inch], center=true);
+ }
+ notches(2, 1.5*inch, thickness);
+ translate([10 - thickness, 0.75*inch, 0]) square([thickness, 1*inch], center=true);
+ translate([10 + thickness, 0.75*inch, 0]) square([thickness, 1*inch], center=true);
+ }
+}
+
+module side_support_insert() {
+ square([1.75*thickness, 1*inch], center=true);
+}
+
+module inside_support() {
+ square([6.5*inch, 2*8.25], center=true);
+}
+
+module extra_layout() {
+ translate([0, -1.5*inch, 0]) {
+ translate([-4*inch, 0, 0]) rotate([0,180,0]) side_support();
+ translate([ 4*inch, 0, 0]) rotate([0,0,0]) side_support();
+ }
+ translate([0, 3*inch, 0]) {
+ translate([-4.25*inch, 0.5*inch, 0]) rotate([0,0,90]) side_support_insert();
+ translate([-4.25*inch, 0, 0]) rotate([0,0,90]) side_support_insert();
+ translate([ 4.25*inch, 0.5*inch, 0]) rotate([0,0,90]) side_support_insert();
+ translate([ 4.25*inch, 0, 0]) rotate([0,0,90]) side_support_insert();
+ }
+ translate([5.25*inch,0.4*inch,0]) rotate([0,0,90]) inside_support();
+ %translate([0.5*inch,0,0]) square([11*inch,18*inch], center=true);
+}
+
+module plaque() {
+ linear_extrude(height=0.125*inch, center=true, convexity=2)
+ import("b17-cutaway-frame.dxf");
+}
+
+module extra_assembly() {
+ translate([-6.625*inch/2,0,outer_height/2]) rotate([90,0,0]) rotate([0,90,0]) thicken() side_support();
+ translate([ 6.625*inch/2,0,outer_height/2]) rotate([90,0,0]) rotate([0,90,0]) thicken() side_support();
+ color("violet") translate([-(6.625*inch/2+thickness/2-(1.75*thickness/2)),10-thickness,outer_height/2+0.75*inch]) rotate([90,0,0]) thicken() side_support_insert();
+ color("violet") translate([-(6.625*inch/2+thickness/2-(1.75*thickness/2)),10+thickness,outer_height/2+0.75*inch]) rotate([90,0,0]) thicken() side_support_insert();
+ color("violet") translate([ (6.625*inch/2+thickness/2-(1.75*thickness/2)),10-thickness,outer_height/2+0.75*inch]) rotate([90,0,0]) thicken() side_support_insert();
+ color("violet") translate([ (6.625*inch/2+thickness/2-(1.75*thickness/2)),10+thickness,outer_height/2+0.75*inch]) rotate([90,0,0]) thicken() side_support_insert();
+ color("magenta") translate([0,10,outer_height/2-thickness-thickness/2]) rotate([0,0,0]) thicken() inside_support();
+ %translate([0, 10, 5.5*inch/2 + outer_height/2 - thickness])
+ rotate([90, 0, 0])
+ plaque();
+}
+
+//mode = "assembly";
diff --git a/2d/b17-lit-base/b17-lit-base.svg b/2d/b17-lit-base/b17-lit-base.svg
new file mode 100644
index 0000000..ed4eeb0
--- /dev/null
+++ b/2d/b17-lit-base/b17-lit-base.svg
@@ -0,0 +1,366 @@
+
+