diff --git a/sketchup/extruder_idler.skb b/sketchup/extruder_idler.skb
deleted file mode 100644
index 451256d..0000000
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diff --git a/sketchup/grouped_etc/AutoSave_xcarriage-rack-pinion.skb b/sketchup/grouped_etc/AutoSave_xcarriage-rack-pinion.skb
deleted file mode 100644
index 4836b58..0000000
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diff --git a/sketchup/grouped_etc/motor-idler-ii.skb b/sketchup/grouped_etc/motor-idler-ii.skb
deleted file mode 100644
index 46912ab..0000000
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diff --git a/sketchup/grouped_etc/old-xend-rack-adapter.skb b/sketchup/grouped_etc/old-xend-rack-adapter.skb
deleted file mode 100644
index 64c796b..0000000
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diff --git a/sketchup/grouped_etc/servo_mount.skb b/sketchup/grouped_etc/servo_mount.skb
deleted file mode 100644
index 0ecef2c..0000000
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diff --git a/sketchup/grouped_etc/wilson_ii_assembled_model.skb b/sketchup/grouped_etc/wilson_ii_assembled_model.skb
deleted file mode 100644
index c652b98..0000000
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diff --git a/sketchup/grouped_etc/xcarriage-rack-pinion.skb b/sketchup/grouped_etc/xcarriage-rack-pinion.skb
deleted file mode 100644
index 3dca0e9..0000000
Binary files a/sketchup/grouped_etc/xcarriage-rack-pinion.skb and /dev/null differ
diff --git a/sketchup/grouped_etc/xy-tensioners-wide.skb b/sketchup/grouped_etc/xy-tensioners-wide.skb
deleted file mode 100644
index eb0bbdd..0000000
Binary files a/sketchup/grouped_etc/xy-tensioners-wide.skb and /dev/null differ
diff --git a/sketchup/grouped_etc/xy-tensioners.skb b/sketchup/grouped_etc/xy-tensioners.skb
deleted file mode 100644
index cc859a8..0000000
Binary files a/sketchup/grouped_etc/xy-tensioners.skb and /dev/null differ
diff --git a/sketchup/z-top-bottom.skp b/sketchup/grouped_etc/z-top-bottom.skp
similarity index 100%
rename from sketchup/z-top-bottom.skp
rename to sketchup/grouped_etc/z-top-bottom.skp