Suzan Gieles, also known as Rhaya Cosplay, has experience making armor and working with thermoplastics like Worbla. She’s used the material to make armor pieces for a few different costumes, and she’s picked up some tricks along the way. In a video she posted last year on YouTube, she demonstrates how to fill in and fix seams in Worbla by using a glue gun. She points out the glue works in the same way as thermoplastics and is a much more affordable option than something like Worbla’s Deco Art. After applying the hot glue, she uses the hot metal nozzle of the glue gun to smooth out the glue and make the surface seamless.