diff --git a/feegle_xs/readme.md b/feegle_xs/readme.md
index 896f554..cde54ba 100644
--- a/feegle_xs/readme.md
+++ b/feegle_xs/readme.md
@@ -15,6 +15,8 @@ Flashing bootloader with Arduino Uno https://www.40percent.club/p/arduino-isp-bo
 
 More info about V-USB https://www.40percent.club/2020/08/the-aardvark.html
 
+Pre-trimming before soldering https://www.40percent.club/p/pre-trimming-components.html
+
 Using SMT switches https://www.40percent.club/p/smt-conversion.html