If it were effected by sunder you would only need 3 sunders to make the weapon unuseable, the 4th just destroys it. Perhaps the point is that it is a rather epic weapon so no need to provide 2 ways to destroy the thing, just rely on 2 triumphs, only the Makashi folks can avoid the destroy/disarm anyway (well, short of removing their limbs). For double bladed sabers we just add a talent to the weapon that causes only half of it to be destroyed per 2 triumphs, having it lose any hilt mods 1 blade, bringing it down to crystal mods and a standard hilt....also lowering its unwieldly from 2 (3?) to none.

I'm not arguing for the sake of realism, I'm arguing because it's an exception made to the rules when it made sense to have such an exception (namely, a lightsaber was an epic story item that should not be easily damaged or lost), now that we have rules for parts and "construction", this exception is no longer needed.

It's still a pretty epic item, though. It can now be replaced with a lot of time and resource so it's not like it's gone forever now. But it's still several steps up from losing a gun or a vibroaxe or whatever. Your ranged character might be very pissed when they lose their customized rifle, but they'll be able to pick one up off the next fallen opponent or rush into a shop and buy one with a quick Streetwise roll. It's a hiccup and a nuisance to them. A Jedi losing her lightsabre is a pretty big deal. Especially if it happens near the start of the adventure when downtime is a long way away.

This is why I suggest that the crystal should always remain. That way, even if the hilt were destroyed by 4 sunders, the character would only spend about the same amount of effort to replace the lightsaber as another character might have to in order to replace their beloved (non-lightsaber) weapon.

Also, perhaps a new quality might be in order. Someone mentioned Phrik, which is similar to Cortosis. I'm actually a bit vague on how they differ, except that refined cortosis might actually short a lightsaber blade and phrik can't.

Phrik : This quality increases the cost to Sunder the weapon by one.

I don't suppose armor can be sundered.

Well, phrik is functionally identical to cortosis ore/alloy, namely in that it prevents the treated weapon from being sliced apart by a lightsaber. In fact, the electrostaff has the Cortosis qualitiy, but I'm pretty sure the description says that's made from phrik alloy.

I do think you're on the right track though, and that instead of being immune to Sunder, the cost to activate the Sunder quality against a lightsaber should be increased, either by 1 total or by 1 for each level of damage.

the problem is the BLADE is immune to sunder. (or should be) but the hilt is not. If any of you have ever done any type of sword/knife/Stick fighting it would be easier to attack the hand, or wrist then the hilt.

That is what I think the new rule is suppose to detail. in fact, it would be easier to use a triumph to disarm, then fudge some rules that would allow you to sunder a light saber.

I always thought what happened to darth maul was a type of disarm. The double bladed light saber is highly ineffective as an offensive weapon, but a superior defensive weapon.

Just leave it immune to Sunder. That way it remains consistent with prior books, which was a promise FFG made from Day 1 of EotE. This was ostensibly already playtested way back then. When playtesting the EotE beta, I personally did not assume that Lightsabers were immune to Sunder because of how rare/precious they are in that setting. I assumed that was how FFG intended them to work in the broader game inclusive of AoR and F&D. Way back then I thought, "Gee, if lightsabers weren't immune to Sunder, that would be the first thing anyone would do in a lightsaber duel. It sure is nice that they're immune to Sunder." Plus, only a vocal minority seem to think that making lightsabers Sunder-able would improve their game. They can use house-rules to change it easily enough.

Or please explain why Cortosis is immune to Sunder and why that doesn't bother you. Cortosis isn't invincible after all. Cortosis is resistant to Lightsabers, but LIghtsabers are not the only weapon that can Sunder. If you think the lightsaber immunity to Sunder is "magical" please explain how a cortosis weapon's immunity is not "magical".

After thinking a bit, I agree with the lack of being able to sunder.

You still can disarm with a triumph, and destroy the weapon with two triumphs.

Just cannot break the weapon with a sunder quality.

If anything when Luke was laying the beatdown on Vader at the end of the Epic duel before he sliced off his hand would be as close as you could to trying to sunder a light saber. Far easier to maim the offending appendage

Bingo. In my mind, I separate "cannot be sundered" from "indestructible." "Cannot be sundered" just means that you can't slap it in half whenever you want. Granted, as you've noted, destruction of a lightsaber should be a story mechanic and not the result of a random die roll. I'd perhaps allow a character to target the lightsaber specifically rather than attack the user, though the difficulty and time needed for such an attack would be impractical in combat.