Fine People fo Open Builds... My weekend plans have gone slightly amiss dues to having to take my daughter to A&E, the right of passage I think... Anyhow as everyone is ok and just a bit bruised I thought I would pick up my calibration block. I have modelled this based on Ryan's video on Ooznest. It is a 60 X 60 square, with the second square cut down to calibrate the Z axis. I have made my fusion model available at the following location: A360 you can see the model and CAM profile. So I've modelled a fair bit before in Solidworks and Fusion, but have no experience of CAM apart from my WorkBee which is only 4 or so weeks old. Alex Chambers posted some useful notes on feeds and speeds and this is the area I am probably most nervous about. I usually cut wood, and take fairly light passes, this is Aluminum and would rather not break my endmill. These are the settings I have used, can some more experienced eyes have a look and give me the benefit of their experience? To give a complete picture this is a photo of the setup of the workbee. As always, thank you for reading... Regards Colin.