I was trimming a foot the other day and an observer told me I should 'Take a bit more off one side to make the foot symetrical.'. Well I didn't and I wouldn't.
Using a completely different foot belonging to a very kind volunteer I will try and explain why.
I must emphasise that the foot in the pictures is for demonstration purposes only and is not the foot which sparked this post.
The pink lines show the vertical and the green the horizontal planes. I hope you can see where and how the foot deviates from being symetrical.
If this were the foot in question the observer would want me to take off the portion of foot sticking out towards the bottom on the left hand side.
Now look at the solar view below.
The pink line bisects the centre of the foot. The green lines to the left and right are equal distances from the pink line. If (please don't) but if you followed the chop it off to make it symetrical theory then in this picture you would take out the right hand side. (Completely opposite to that suggested by the front view.)
Yes it's the same foot, the pictures are taken seconds apart on the same day.
If I had followed the observer's advice I would have ended up resecting the foot which is of course completely unacceptable.
I'll post a bit more about this later in the week. Questions welcome.