BB_YT

I recently got the "Blacksmith Forge" so I have been goofing around with it and one of the items I crafted was the "Glassblowing Pipe" but I don't know how to use it. I am assuming I need molten glass but if that's a thing I can't find it. Someone please help.

Thank you for the fast reply.

I have read in other discussions that I need "Yarn" to craft the "sewing kit" for the "bellows". But when I have "yarn" in my inventory I can't find the "sewing kit" under the crafting menu. Someone please help!!!