diff --git a/string.scad b/string.scad
new file mode 100644
index 00000000..f778812c
--- /dev/null
+++ b/string.scad
@@ -0,0 +1,71 @@
+// Uncomment this bloc to see how to use this library.
+/*
+	// strToInt(string [,base])
+
+	// Resume : Converts a number in string.
+	// string : The string you wants to converts.
+	// base (optional) : The base conversion of the number : 2 for binay, 10 for decimal (default), 16 for hexadecimal.
+	echo("*** strToInt() ***");
+	echo(strToInt("491585"));
+	echo(strToInt("01110", 2));
+	echo(strToInt("D5A4", 16));
+	echo(strToInt("-15"));
+	echo(strToInt("-5") + strToInt("10") + 5);
+	
+	// strcat(vector [,insert])
+
+	// Resume : Concatenates a vector of words into a string.
+	// vector : A vector of string.
+	// insert (optional) : A string which will added between each words.
+	echo("*** strcat() ***");
+	v_data = ["OpenScad", "is", "a", "free", "CAD", "software."];
+	echo(strcat(v_data)); // ECHO: "OpenScadisafreeCADsoftware."
+	echo(strcat(v_data, " ")); // ECHO: "OpenScad is a free CAD software."
+	
+	// substr(str, pos [,length])
+
+	// Resume : Substract a substring from a bigger string.
+	// str : The original string
+	// pos : The index of the position where the substring will begin.
+	// length (optional) : The length of the substring. If not specified, the substring will continue until the end of the string.
+	echo("*** substr() ***");
+	str = "OpenScad is a free CAD software.";
+	echo(str); // ECHO: "OpenScad is a free CAD software."
+	echo(substr(str, 0, 11)); // ECHO: "OpenScad is"
+	echo(substr(str, 12)); // ECHO: "a free CAD software."
+	echo(substr(str, 12, 10)); // ECHO: "a free CAD"
+	
+	// fill(string, occurrences)
+
+	// Resume : Fill a string with several characters (or strings).
+	// string : the character or string which will be copied.
+	// occurrences : The number of occurences of the string.
+	echo("*** Fill() ***");
+	echo(fill("0", 4)); // ECHO: "0000"
+	echo(fill("hey", 3)); // ECHO: "heyheyhey"
+	
+	// getsplit(string, index [,separator])
+
+	// Resume : Split a string in several words.
+	// string : The original string.
+	// index : The index of the word to get.
+	// separator : The separator which cut the string (default is " ").
+	// Note : Nowadays it's impossible to get a vector of words because we can't append data in a vector.
+	echo("*** getsplit() ***");
+	echo(getsplit(str));
+	echo(getsplit(str, 3));
+	echo(getsplit("123, 456, 789", 1, ", "));
+*/
+
+function strToInt(str, base=10, i=0, nb=0) = (str[0] == "-") ? -1*_strToInt(str, base, 1) : _strToInt(str, base);
+function _strToInt(str, base, i=0, nb=0) = (i == len(str)) ? nb : nb+_strToInt(str, base, i+1, search(str[i],"0123456789ABCDEF")[0]*pow(base,len(str)-i-1));
+
+function strcat(v, car="") = _strcat(v, len(v)-1, car, 0);
+function _strcat(v, i, car, s) = (i==s ? v[i] : str(_strcat(v, i-1, car, s), str(car,v[i]) ));
+
+function substr(data, i, length=0) = (length == 0) ? _substr(data, i, len(data)) : _substr(data, i, length+i);
+function _substr(str, i, j, out="") = (i==j) ? out : str(str[i], _substr(str, i+1, j, out));
+
+function fill(car, nb_occ, out="") = (nb_occ == 0) ? out : str(fill(car, nb_occ-1, out), car);
+
+function getsplit(str, index=0, char=" ") = (index==0) ? substr(str, 0, search(char, str)[0]) : getsplit(   substr(str, search(" ", str)[0]+1)   , index-1, char);
\ No newline at end of file