What are the points of no return for factions?

[Glebu]

i want to get every reward before fully siding with a faction and i dont know at what quest i should stop

[Chaosium]

The Mass Fusion quest when you have to retrieve a specific element will make you hostile to BoS/Institute depending on the side you pick.

The others points of no return are pretty obvious, you'll be prompted to go and kill said factions, so don't do it if you have stuff to do beforehand.

Battle of Bunker Hill can have you banished from the Institute depending on what you say at the end

[JDaremo Fireheart]

Here ya go. This is a Flow Chart listing the Faction Quests and the Point of No Return Quests in Red
https://i.imgur.com/Rzg2p84.png?1

[Jouni]

Railroad: Entering Institute. They don't trust you if you haven't met them before doing that.
Institute & BOS: Mass fusion. Both want the same item.

[blastoffintoinfinity]

thanks jdaremo that was the most helpful post i have found on the subject

[Bored Peon]

Just be warned, some of the quests get really glitchy taking the "max quest route." Especially when you cross over into the BOS the quests with Proctor Ingram and Dr Li tends to get messy.