trend_tok_hub on Instagram: "The video tutorial shows wrapping copper wire around a bolt to create a custom thread insert, annealing it with a lighter for malleability, then screwing it into a stripped plastic hole for secure fastening. This hack replicates commercial Helicoil kits for repairing damaged threads in plastics, offering a cost-effective alternative using household items, as supported by DIY communities on YouTube and Reddit. Posted by an Indonesian account with 1.9k likes and 676k v