backinit I have starting using Bob Smith Industries - BSI-203H. It has a working time of 5 - 10 minutes. Available on eBay and Amazon. Good stuff.
BSI has good quality stuff but I don't know that I would use that for golf clubs. It looks just like JB Weld. It is almost impossible to pull a shaft from a head that used JB Weld without scorching it. The videos on Amazon show people trying to drill and grind it. Golf shafting epoxy maintains a bit of flexibility for shock absorption. Leave left over glue on a paper plate and after it is dry you can bend the leftover glue. A local dealer used to sell shafting epoxy with his store label on it. He told me he got it from Golfsmith in 5 gallon cans and bottled it with his label. He needed to reorder and GS was out so they had it drop shipped from the mfgr. which was the Hardman Corp.. You can find Hardman Epoweld on ebaybay.