MP-01 - Masterpiece Optimus Prime - Feet

The heel and toe can be held together with a small screw. Use a section of a pen spring under the screw to apply tension. This will let the foot settle in the slot and rotate when needed.

For strength reasons on an FDM the ankle should be printed flat. Some super glue in the bottom of the hole will hold it nicely.

For the pipes at the back of the foot, Use a segment of 1.75mm filament as a pin. Put the filament all the way throught the holes in the pipes and the foot. Add a amall dot of superglue to each end where the filament enters the foot. Once it is dry, cut off the excess with flush cutters.