THF shouldn't be that much trouble, there has to be an industrial supply near you, carpet glue thinner, paint thinner etc. go in with construction boots and paint stained clothes, don't clean your fingernails or shave, and tell rude jokes
as far as the pvc stuff goes, i have a can in front of me brand Name: Oatey PVC Cement - Medium Gray PVC SOLvent Cement for plastic pipe and fittings.
heres the address
4700 West 160th St Clevland, Ohio 44135
and phone
1(216) 267-7100
think about it though, after distilling the solvent outta you flask, it would be sooo fucked, you have to use all your thf just to clean it. look harder, its used as a paint thinner, both alone and mixed with acetone
"All those memories lost like rain..."