unfortunately, all glass pipes break sooner or later. They are also difficult to clean over time. Therefore, I switched to metal long ago)
Dude, In my lifetime I must have broken 100 pipes, bong, bubblers one hitters. Just have a short service and lay your pipe to rest. Buy another one.
thats one reason why I refuse to spend too much money on pieces. they brake. usually won't go over $100 for any type of glass.
Personally i haven't done any tests myself , from everything i have heard most metals like brass ,aluminum copper produce toxic vapors . I think chromed metals are a issue too. Not sure about steel , Stainless steel or titanium, I am sure that these metals produce more toxic vapors at higher temps. What temps those are I don't know ! I have to wonder after the inside of the pipe gets coated with resin makes any difference on how much toxic vapors you breath in . I think the main reason why allot of cannabis smokers prefer glass it doesn't change the taste of the weed , and its not toxic .. Pretty much all woods are toxic or raspatory issues to humans just something to think about ...