diff --git a/hjklbox/keycap.go b/hjklbox/keycap.go
new file mode 100644
index 0000000..1e5d0b3
--- /dev/null
+++ b/hjklbox/keycap.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"github.com/deadsy/sdfx/sdf"
+	v2 "github.com/deadsy/sdfx/vec/v2"
+)
+
+// keycap makes a choc switch cap for use with the HJKL and start/select cluster
+func keycap() sdf.SDF3 {
+	keycapTop2D := sdf.Box2D(sdf.V2{X: 13, Y: 13}, 1)
+
+	keycapBottom2D := sdf.Box2D(sdf.V2{X: 14, Y: 14}, 1)
+	keycapBottom2D = sdf.Difference2D(keycapBottom2D, keycapTop2D)
+
+	/*	keycapTop := sdf.Extrude3D(keycapTop2D, 1)
+		keycapTop = sdf.Transform3D(keycapTop, sdf.Loft3D())*/
+	keycapBottom := sdf.Extrude3D(keycapBottom2D, 1)
+	keycapBottom = sdf.Transform3D(keycapBottom, sdf.Translate3d(sdf.V3{X: 0, Y: 0, Z: 1}))
+	keycap := sdf.ScaleExtrude3D(keycapTop2D, 1, v2.Vec{X: 1.0775, Y: 1.0775})
+	keycap = sdf.Union3D(keycap, keycapBottom)
+
+	stem2D := sdf.Box2D(sdf.V2{X: 1.2, Y: 3}, 0)
+	stems := make([]sdf.SDF3, 2)
+	for i := range stems {
+		stems[i] = sdf.Extrude3D(stem2D, 4)
+		stems[i] = sdf.Transform3D(stems[i], sdf.Translate3d(sdf.V3{X: 2.85, Y: 0, Z: 2}))
+	}
+	stems[1] = sdf.Transform3D(stems[1], sdf.MirrorYZ())
+
+	keycap = sdf.Union3D(keycap, sdf.Union3D(stems...))
+
+	return keycap
+}