diff --git a/3Dfiles/older_version/gas_mask_v6.FCStd b/3Dfiles/older_version/gas_mask_v6.FCStd
index e3d98b4..55da99e 100644
Binary files a/3Dfiles/older_version/gas_mask_v6.FCStd and b/3Dfiles/older_version/gas_mask_v6.FCStd differ
diff --git a/Readme.fr.md b/Readme.fr.md
new file mode 100644
index 0000000..a82c834
--- /dev/null
+++ b/Readme.fr.md
@@ -0,0 +1,10 @@
+# Masque à gaz paramétrique imprimé en 3D 
+
+## _3D Printed parametric gaz-mask (**english version [here](./Readme.md)**)_
+
+[![fr](https://img.shields.io/badge/lang-fr-red.svg)](./Readme.fr.md)
+[![en](https://img.shields.io/badge/lang-en-green.svg)](./Readme.md)
+
+_**des photos seront ajoutées plus tard pour clarifier les explications**_
+
+**La version francaise du readme sera ajouté plus tard...**
\ No newline at end of file
diff --git a/Readme.md b/Readme.md
index db83f16..7aa3d19 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,5 +1,20 @@
 # 3D Printed parametric gaz-mask
 
-## _Masque à gaz paramétrique imprimé en 3D_
+## _Masque à gaz paramétrique imprimé en 3D (**version francaise [ici](./Readme.fr.md)**)_
+
+[![fr](https://img.shields.io/badge/lang-fr-red.svg)](./Readme.fr.md)
+[![en](https://img.shields.io/badge/lang-en-green.svg)](./Readme.md)
+
+_**pictures will be added later for more clarity**_
+
+## 1 - General principle
+
+_TODO_
+
+## 2 - Older version
+
+_TODO_
+
+## 3 - Explanation of parameters
 
 _TODO_
\ No newline at end of file