diff --git a/README.adoc b/README.adoc
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--- a/README.adoc
+++ b/README.adoc
@@ -32,6 +32,9 @@ IKEA PLATSA screw plug
 ----------------------
 There are connecting holes at the top of frames from this system.  I've designed
 a simple plug to hide them, and to make the surface more or less level.
+Prusament ASA "Signal White" is an appropriate filament.
+
+image::ikea-platsa-screw-plug.jpg[IKEA PLATSA screw plug]
 
 Book scanning stand
 -------------------
diff --git a/ikea-platsa-screw-plug.jpg b/ikea-platsa-screw-plug.jpg
new file mode 100644
index 0000000..18ee997
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