This is a thread to talk about ways to prevent this problem.
I like the wrap-over sword construction technique because it's easy and makes for fast builds. I have noticed swords built this way seem rather susceptible to sword tip blowout.
My solutions:
- Make weapons slightly broader along the striking surface for more adhesion and less PSI of torsion stress. Effective results but not that great since weapons have more drag when swung and hit lighter. Better for reds than blues
-Hockey tape each foam layer added with a _\|/_ pattern for maximum support. Make sure not to pull tape tight enough to compress foam. It seems very promising so far. It also makes the tip less "grazy" feeling as extra benefit because it stiffens the coreless area.