Photo below shows the etched marks I placed on the chassis components in order to help me place the spacers during assembly. As you can see I have made a design mistake here and the etched markings are not in the right place. I used the feet etchings (made for a similar purpose with the ankles) instead to get the spacers placed correctly.
I used the laser cut feet to size up my ankle slots:
I used the spacers in the end not just to make the legs fit over the ball link. They came in handy for the leg pivot motion too:
A funny thing happened on the way to my ball joints.... (!) Photo below shows the ones I modelled in Solid works and printed in 3D to the FDM (Dimension) printer:
Then I met this bloke, Ian, in the computer room who works for a company that makes orthopedic hip joints. He offered to help me out with the manufacturing. He was going to make them out of plastic, which would be great as then I'd be using the Fuse Deposition Molder to it's true intention as a prototype to proper manufacture... However the parts were so small that plastic machining didn't work out... So instead he made them out of... Titanium...
I made a modelling mistake with the Chassis struts and when I did the laser cutting I realised as I tried out the parts. Even though I had to cut new ones it did work out well in the end. I had intended to mark up the struts for the servo fixing holes after laser cutting and then drill them. But using the struts which were too long I marked them up and then amended the 2D Deign model to have the holes already laser cut...
