diff --git a/fightstick/body.go b/fightstick/body.go
index a192234..e4e850e 100644
--- a/fightstick/body.go
+++ b/fightstick/body.go
@@ -26,21 +26,20 @@ func topPlane() sdf.SDF2 {
 	buttons = loggedMovement(buttons, v2.Vec{X: top.BoundingBox().Max.X / 2, Y: top.BoundingBox().Max.Y / 4}, "button cluster")
 	top = sdf.Difference2D(top, buttons)
 
-	// auxillaryButtons := functionRow()
-	// this is a bit ugly
-	// auxillaryButtons = loggedMovement(auxillaryButtons, v2.Vec{X: -top.BoundingBox().Max.X / 2.4, Y: 4 * (top.BoundingBox().Max.Y / 5)}, "function cluster")
-	// top = sdf.Difference2D(top, auxillaryButtons)
+	screws := screwHoles()
+	top = sdf.Difference2D(top, screws)
 
 	return top
 }
 
 // wallsPlane produces a 2D top-down image of the fightstick's walls.
+// TODO: use trapezoid to create simpler internal corners for screw holes.
 func wallsPlane() sdf.SDF2 {
 	walls := sdf.Box2D(v2.Vec{X: BODY_SIZE_X, Y: BODY_SIZE_Y}, BODY_CURVE)
 	body := sdf.Box2D(v2.Vec{X: BODY_SIZE_X - WALL_THICKNESS, Y: BODY_SIZE_Y - WALL_THICKNESS}, BODY_CURVE)
 	walls = sdf.Difference2D(walls, body)
 
-	screwProtrosion := sdf.Box2D(v2.Vec{X: WALL_THICKNESS / 3, Y: 12}, 0)
+	screwProtrosion := sdf.Box2D(v2.Vec{X: WALL_THICKNESS / 3, Y: WALL_THICKNESS * 2.2}, 0)
 	rProt := loggedMovement(screwProtrosion, v2.Vec{X: (BODY_SIZE_X / 2) - (WALL_THICKNESS / 1.6), Y: 0}, "right screw protrosion")
 	lProt := loggedMovement(screwProtrosion, v2.Vec{X: -(BODY_SIZE_X / 2) - -(WALL_THICKNESS / 1.6), Y: 0}, "left screw protrosion")
 	tProt := sdf.Transform2D(screwProtrosion, sdf.Rotate2d(sdf.DtoR(90)))
@@ -48,5 +47,35 @@ func wallsPlane() sdf.SDF2 {
 	tProt = loggedMovement(tProt, v2.Vec{X: 0, Y: (BODY_SIZE_Y / 2) - (WALL_THICKNESS / 1.6)}, "top screw protrosion")
 	walls = sdf.Union2D(walls, rProt, lProt, tProt, bProt)
 
+	screws := screwHoles()
+	walls = sdf.Difference2D(walls, screws)
+
 	return walls
 }
+
+// screwHoles produces m4 screwHoles along the sides of the piece.
+// TODO: Corners need to be adjusted.
+func screwHoles() sdf.SDF2 {
+	hole, _ := sdf.Circle2D(M4_SCREW_DIAMETER / 2)
+	holes := make([]sdf.SDF2, 14) // 1 top + 1 bottom + (1 * 2 corners) + 2 right, + 1 center = 7 for one side, 14 for two sides.
+	for i := range holes {
+		holes[i] = hole
+	}
+	centerOffset := 3.0
+	sideOffset := 4.0
+	buffer := 2.5
+	// right side
+	holes[0] = sdf.Transform2D(holes[0], sdf.Translate2d(v2.Vec{X: centerOffset, Y: 0}))
+	holes[1] = sdf.Transform2D(holes[1], sdf.Translate2d(v2.Vec{X: centerOffset, Y: (BODY_SIZE_Y / 2) - (WALL_THICKNESS / buffer)}))
+	holes[2] = sdf.Transform2D(holes[1], sdf.MirrorX())
+	holes[3] = sdf.Transform2D(holes[3], sdf.Translate2d(v2.Vec{X: (BODY_SIZE_X / 2) - (WALL_THICKNESS / buffer), Y: (BODY_SIZE_Y / 2) - (WALL_THICKNESS / buffer)}))
+	holes[4] = sdf.Transform2D(holes[3], sdf.MirrorX())
+	holes[5] = sdf.Transform2D(holes[5], sdf.Translate2d(v2.Vec{X: (BODY_SIZE_X / 2) - (WALL_THICKNESS / buffer), Y: sideOffset}))
+	holes[6] = sdf.Transform2D(holes[5], sdf.MirrorX())
+
+	for o := 0; o < len(holes)/2; o++ {
+		holes[o+len(holes)/2] = sdf.Transform2D(holes[o], sdf.MirrorY())
+	}
+
+	return sdf.Union2D(holes...)
+}
diff --git a/fightstick/fightstick b/fightstick/fightstick
index 064e6c7..c5f689d 100755
Binary files a/fightstick/fightstick and b/fightstick/fightstick differ