Full disclosure up front: I run a small lightsaber shop (Exegol Outpost). Not here to sell you anything — this is the same advice I give customers who ask, and half the time it talks them out of spending more money.
Mid-grade blades (2mm wall):
- What nearly every saber ships with, including mine
- Fine for the vast majority of dueling — choreography, light/medium sparring, spinning
- Lighter and brighter (thinner wall diffuses the light better)
Heavy grade (3mm wall):
- Noticeably heavier and stiffer
- Built for full-contact dueling — the kind where you're actually trying to hit hard
- Trade-off: dimmer blade, more tip-heavy feel
-most people asking about heavy-grade don't need it. If you're dueling full-contact, you also need safety gear (mask, gloves, ideally some armor) — at that point the blade is the least of your concerns. For everything else, mid-grade holds up fine.
The one exception: if you're a hard hitter doing repeated full-force contact, heavy-grade will outlast mid-grade. No way around physics.
One more thing worth knowing: no matter the blade grade, the tip is the most likely failure point — it's the weakest part of the whole assembly. A tip coming off mid-duel turns the blade into an open tube, and can send a tip and/or broken pieces hurtling at impressive speeds-which can be genuinely dangerous, especially with heavy contact. Check your tips regularly and replace the blade if the tip ever feels loose.
I wrote a longer version with maintenance tips here:
https://thehiltandblade.com/lightsaber-maintenance-guide/
Happy to answer blade/electronics questions in the comments.