After using it for 2-3 months, the bottom part of the mechanical pencil comes off violently and suddenly while writing, cracking the grooves and I am unable to assemble them back. I do not have a habit of unscrewing the grooves at all while I’m using my mechanical pencil and I think this problem of the pencil tip flying off could become dangerous for kids or anyone who are at the wrong place at the wrong time. Would like to ask if anyone encountered a similar situation as me and how did you prevent the problem from happening with any mechanical pencil.
Well, you know the saying... Garbage in, garbage out. Your pencil is beautiful, but made of short-life materials. Unfortunately, repairing that pencil is going to be a lot more expensive than buying a new (expensive) one.
Personally, I use Rotring Tikky Mechanical Pencils for more than 20 years, and they have yet to disappoint. I am not making any specific advertisement, it is just fact. Buy once, use a lifetime. Of course, everything is breakable by using enough force, but that is not under discussion here.
Just go to a stationery shop, see what they have, choose based on (perceived) strength rather than beauty. If the clerk looks trustworthy, ask them for advice.
For thick leads (1+ mm), I even had mechanical pencils (I do not remember the brand names) with metal body. Pretty much immortal.