Purfling and cracks
If you look at old Basses with cracks, you will see that the Crack either runs straight up under the purfling, thru the purfling or slightly sideways if the Purfling deflects the crack slightly off track and to the sides and around it. Tension and/or shrinkage has caused the Crack and nothing will stop it. Just look at Bass Bar Cracks. The Bass Bar is 1000 x more massive than Purfling yet Basses crack right under and thru the Bar all the time.
Violins crack all the time. Purfling acts like a tiny 'Damn' in a Flood. It either flows through the Damn if big enough or Flows around it somewhere else.. But the Flood waters come like it or not. Violins are much stronger in relation to Basses. The Purfling is about the same size and inlaid the same depth as on a Bass but the Bass is much bigger. The purfling will have a similar proportioned diminished effect on a Bass as it is in ratio to the size difference to the Violin if at all.
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