I don't see a listing for a 12mm outer / 5.6mm inner module on your ebay, could you link it?
For short usage, could try printing with some fancier filaments that can get hotter, but I think the low heat transfer rate is going to stay no matter what plastic you're using, so it's probably not...
Hi! I'm totally new to lasers and trying to do my first build with a PLTB450B. I accidentally bought a 9mm module though and I'm wondering if there's any easy way to adapt the size for it, like some little spacer piece I can buy or 3d print, or if I should just get a 5.6mm module. Thanks!