diff --git a/README.md b/README.md
index f6079be325f500716b276257370d4297ba7c864a..9db6877b59526d1443e9280c6ba1d5b347cc2eea 100644
--- a/README.md
+++ b/README.md
@@ -15,6 +15,11 @@ We will use a custom magnet wire plotting tool for the Zund cutter to plot coils
 <img src="https://calischs.pages.cba.mit.edu/kiri-tww/img/flatcoil/flatcoil-40awg-microscope.jpg" height=250px>
 <img src="https://gitlab.cba.mit.edu/calischs/kiri-tww/raw/master/img/flatcoil/flatcoil-cut.jpg" height=250px>
 
+## TODO
+
+- laser cut shim layer (500um? 1mm?).
+- test heat+vacuum for membrane layers (sam)
+- verify magnet orientations with gaussmeter.
 
 ## Simulation