the comments about serger thread being too thin surprised me- since my serger thread is 50 wt- and i use 60-100 wt threads all the time- which are even thinner than the serger thread at 50wt.
it is a strong-good thread- my mom bought a store supply from a place going out of business and we have been using up those cones for 20 years- i've never had any project fall apart-- or have any adverse effects from the thread.