Garden rake with adjustable handle and ergonomic grip

My wife needed a small rake in the garden, so I designed and printed one.
The handle bar is made out of a 16mm diameter pipe commonly used in household tools. It comes from a broken marc.

The rake is reinforced by internal tubes in the fingers and there is a tube for a 4mm diameter carbon fiber rod in the handle clamping part. I think it will work without the rod but will be less strong. Of course you can use other materials for this. Carbon fiber rods can be purchased in your local hobby sh