copper wedge | Golf Monthly

For a time, beryllium copper was used in the manufacture of golf clubs, with emphasis on wedges and putters. Many golfers prefer the soft feel of BeCu club heads, particularly for chip shots and putts around and on the green, where an extra measure of control is desired. Due to regulatory issues and high costs, BeCu clubs are difficult to find in current production, so vintage and pre-owned examples remain in demand.

BUT

As beryllium compounds are toxic and cumulative poisons, there are some safety concerns with handling its alloys. In solid form and as finished parts, beryllium copper presents no known health hazard.[2] However, breathing its dust or vapors, as formed when machining or welding, will eventually cause serious lung damage.[3] Beryllium compounds are known human carcinogens when inhaled.[4] As a result, beryllium copper is sometimes replaced by safer copper alloys such as Cu-Ni-Sn bronze.[5]

So no welding it OK!