Only a little off topic... I've heared that oil/fat etc. Slow down a bow? I use it, although. Carol Edwards, in 'The Glade' is always going on about this. She also mentions that it makes a bow harder to repair, which seems fair.
I have 3 theories as to how this myth/reality came about.
1. They are not as effective as modern varnishes and let moisture it-thus slowing the cast
2. Raw linseed was used and it doesn't cure- and scenario number1 happen, but to a greater extent.
3. There is some sort of internal dampening happening that slows the limbs return, rather like a suspension unit's oil.
or
4. It doesn't slow the cast at all, of course.
What do you think?