Ypedal said:
it's plastic end caps onto aluminum shell so no welding there....
Then what I would expect next is that there are "fingers" or tabs of plastic that are clipping in around the inside or outside of the aluminum, with bumps of some type that latch into slots on the aluminum.
Depending on how they made it, if the aluminum "rim" is *inside* the plastic, and the bumps are tall enough and shaped in a certain way, it may be nearly impossible to remove the end caps without damaging them, because putting the cap on would let the bumps spread the outer edge / end of the cap enough to let the bumps then drop into slots on the aluminum, but not be able to be pulled back off the same way without prying up the edge of the plastic at *all* the bump points at the same time (or breaking off the bumps).
If they *also* used adhesive/sealant of some type, applied before installing the cap onto the aluminum, it might require cutting into the plastic to get it off.
I've had a number of products made that way, though ti's more often plastic on plastic, instead of plastic on aluminum, which can be easier to detach without destruction becuase both sides can bend a little...plastic on aluminum only one side bends, and it's usually the side you don't need to as much.
Makes it highly unlikely to self-disassemble, but it makes it more likely to require destructive disassembly for repairs.