There’s some really good info in the link here, in particular the copper wire test: https://community.glowforge.com/t/how-to-determine-if-plastic-x-is-safe-to-use/648
There’s some really good info in the link here, in particular the copper wire test: https://community.glowforge.com/t/how-to-determine-if-plastic-x-is-safe-to-use/648