If anyone is in need of printed circuit board material I can recommend this source on eBay. Ordered and had it in Harrisburg, NC in 2 days. My Scottish thrift for some things has me cutting my own PC ties on my table saw. I can get quite a lot of strips out of one 12x18” sheet. The have different sized sheets and several thicknesses too.
Seller is paramountusa in Wood Dale, IL 60191-1218
Todd