How many times can a projectile fork?

How many times can a projectile fork?

For chain there is the mod "Skills Chain +1 times".
Is such a mod for fork?

Projectiles can only fork once by default. The upcoming support gem Fork Plus, that will be added in 3.9 will allow projectiles to fork again.

It is important to note that this second fork is worded differently:
"Projectiles from Supported Skills Fork"
vs.
"Projectiles from Supported Skills Fork an additional Time"

That suggests, that even in 3.9, the limit on the fork behaviour will not be lifted in general, and this gem will work as an exception. If you obtain several mods that would cause your projectiles to fork, they will still only fork once. Only the mods that cause your projectiles to "Fork an additional Time" will add more forks.

so im curious how the double fork will work.

so you have 1, and it hits a target and shoots out 2 projectiles. the second fork, does it occur on the 2 projectiles, creating 4 more projectiles? cause yeah that would be booooooonkers. im not sure how else it could work, either.

That will almost certainly be how it works. At most, you will overall hit 7 targets, so I do not think it is too incredible compared to most other modifiers to projectiles, especially considering they always fork at the same angle, which means they are somewhat less likely to hit enemies after forking.

I do think it will do a lot for clearing though.