diff --git a/README.adoc b/README.adoc
index 4559976..9226f83 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,18 +1,21 @@
 Solvespace models
 =================
 
-This is a collection of my custom-made 3D models, with some commentary.
+This is a collection of my custom-made 3D models intended for 3D printing,
+with some commentary.  Solvespace 3.0 or newer is required.
 
 Bathtub strainer
 ----------------
 The first thing I've ever modelled for printing, hence the simple geometry.
+Prevents larger objects from falling in.
 
 image::bathtub-strainer.jpg[Bathtub strainer]
 
 Cable hooks
 -----------
 To be glued to a desk using
-https://www.aliexpress.com/item/32905098341.html[double-sided adhesive tape].
+https://www.aliexpress.com/item/32905098341.html[double-sided adhesive tape],
+which is the red thing in the photo below.
 Prone to delaminating under load when the printer is badly tuned.
 
 image::cable-hook-narrow.jpg[Narrow cable hook]
@@ -21,14 +24,17 @@ Geiger stick
 ------------
 For https://www.aliexpress.com/item/33058301946.html[Huahe M4011] and
 a specific diameter of aluminium pipe.  Use at least three perimeters for
-the handle.
+the handle, or it may break easily.
 
 image::geiger-holder.jpg[Geiger holder]
 
 Book scanning stand
 -------------------
 The pitch of 7 cm fits Samsung Galaxy Note 20 Ultra.  Not as useful as expected,
-however the idea of using aluminium pipes has turned out to be a good one.
+however the idea of using aluminium pipes has turned out to be a good
+one--they're relatively cheap, and easy to work with.  The sections are about
+30 cm long, connected with four identical elbows.  The bottom sits on
+https://www.aliexpress.com/item/32891555457.html[8x2.5 mm silicone pads].
 
 image::phone-scanner-elbow.jpg[Book scanning stand]
 
@@ -36,7 +42,7 @@ Paper boxes
 -----------
 These are actually 2D models for making closable little containers out of
 folded-up paper and a few drops of glue.  It takes a lot of time to make these,
-so not recommended.
+so not recommended at all.
 
 image::paper-boxes.jpg[Paper boxes]
 
@@ -51,13 +57,14 @@ image::pill-container.jpg[Pill container]
 Strainer adapter
 ----------------
 Fixating a pretty stainless steel strainer in my slightly incompatible sink
-drain.
+drain.  Absolutely perfect.
 
 image::strainer-adapter.jpg[Strainer adapter]
 
 Trivial Kailh Choc keycap
 -------------------------
 Fast to print and perfectly functional in PLA, though obviously not very
-comfortable, nor nice to look at.
+comfortable, nor nice to look at.  Below shown next to similarly mediocre
+"Kailh original" white keycaps.
 
 image::trivial-choc-keycap.jpg[Trivial Kailh Choc keycap]