Update the Geiger stick

README.adoc

@@ -24,6 +24,13 @@ Prevents larger objects from falling in.
 
 image::bathtub-strainer.jpg[Bathtub strainer]
 
+Cable bushing
+-------------
+A trivial model for the back of IKEA PLATSA, which is 3 mm thick.  The lip is
+just wide enough to cover my mistakes.
+
+image::cable-bushing.jpg[Cable bushing]
+
 Cable hooks
 -----------
 To be glued to a desk using
@@ -35,11 +42,13 @@ image::cable-hook-narrow.jpg[Narrow cable hook]
 
 Geiger stick
 ------------
-For https://www.aliexpress.com/item/33058301946.html[KB6011] and
+For https://www.aliexpress.com/item/33058301946.html[KB6011] and specific
-a specific diameter of aluminium pipe.  Use at least three perimeters for
+aluminium pipes.  Use at least three perimeters for the handle, or it may break
-the handle, or it may break easily.
+easily.  The pipe needs to be inserted with considerable force.
 
-image::geiger-holder.jpg[Geiger holder]
+image::geiger-holder-12-mm.jpg[Geiger stick PETG]
+
+image::geiger-holder.jpg[Geiger stick PETG and ASA]
 
 IKEA PLATSA screw plug
 ----------------------