please try and be a little more specific with your thread tittles, something like "alternate hardening method?" something like that.
also try and remember to search, there are a couple threads that discuss different methods to use.
now i see in your profile that you are 12, here are some things you could do.
1. ask an older sibling to help you resin/fiberglass the helmet
2. ask your parents to order the aqua resin online
3. ask your parents to order you some smoothcast300-320
4. use the hotglue hardening method
5. keep learning and practicing pep, so that when you get a little older and can afford all the necessary materials you can buy them and use them safely
now that last option sucks, so i suggest using one of the others... if you have questions on any of the other hardening methods do a search and you can find alot of info on them. And for safety purposes, make sure that you clear everything with your parents, and take the proper safety measures.