diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..bc68825
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+*.FCStd1
diff --git a/ball-spider-assembly.FCStd b/ball-spider-assembly.FCStd
index 924f774..4e742dd 100644
Binary files a/ball-spider-assembly.FCStd and b/ball-spider-assembly.FCStd differ
diff --git a/ball-spider-assembly.FCStd1 b/ball-spider-assembly.FCStd1
deleted file mode 100644
index b715f75..0000000
Binary files a/ball-spider-assembly.FCStd1 and /dev/null differ
diff --git a/ball-spider-leg.FCStd b/ball-spider-leg.FCStd
index 24de1c6..6e02fb8 100644
Binary files a/ball-spider-leg.FCStd and b/ball-spider-leg.FCStd differ
diff --git a/ball-spider-leg.FCStd1 b/ball-spider-leg.FCStd1
deleted file mode 100644
index 53cf73f..0000000
Binary files a/ball-spider-leg.FCStd1 and /dev/null differ
diff --git a/foot.FCStd b/foot.FCStd
index d2c2873..55bda19 100644
Binary files a/foot.FCStd and b/foot.FCStd differ
diff --git a/foot.FCStd1 b/foot.FCStd1
deleted file mode 100644
index 32cea40..0000000
Binary files a/foot.FCStd1 and /dev/null differ
diff --git a/hip-knee.FCStd b/hip-knee.FCStd
index 561d9eb..dd023a8 100644
Binary files a/hip-knee.FCStd and b/hip-knee.FCStd differ
diff --git a/hip-knee.FCStd1 b/hip-knee.FCStd1
deleted file mode 100644
index 9b6f7fb..0000000
Binary files a/hip-knee.FCStd1 and /dev/null differ
diff --git a/knee.FCStd b/knee.FCStd
index 17dd92a..1ff1423 100644
Binary files a/knee.FCStd and b/knee.FCStd differ
diff --git a/knee.FCStd1 b/knee.FCStd1
deleted file mode 100644
index 775beae..0000000
Binary files a/knee.FCStd1 and /dev/null differ