Is it possible to put vinyl plastic and metal cans in the oven at 200 degrees F for roughly 5-10 minutes?   More specifically, I was came across DIY Vinyl Bowls where you place the vinyl record over a metal can for 5-10 minutes in the oven, it should become really flimsy and then take it out to form it into a bowl.  I can easily watch over the oven for the time duration but I'm mostly concerned that there would be some sort of plastic explosion or something that might break the oven.  Thank you! 
It's all about balance: the fresh bright and stimulating effect of the early part of brewing, first minute or so, versus the calming deep flavours of the later part of brewing.  some folks use more tea for less time to achieve that first effect; conversely, less for longer for the latter.  stewing for 10min spoils a proper English cuppa.  One trick worth trying with bags is to dip briefly in a small amount of boiling water and discard: this is to rid the 'dust'. One can then steep the 'fannings' longer without too strong a pot.  Interestingly, green tea is traditionally rinsed this way more for hygiene than flavour.  