Companies' carbon-fiber shafts differ.
McDermott uses a shock-absorbing material intertwined in the carbon fiber, Smacwrap, to change its hit, sound and feel from the most-metallic acting carbon fiber shafts. Proof of a sort that it did that is that the shaft dropped on its tip on a pool table doesn’t bounce while other carbon fiber shafts do.
JFlowers’ SMO has two shock absorbers in the shaft (see figure for one of them). Who know what is in other shafts since the cuemakers won’t tell you.
Becue's advertisements sound like they are describing something that is wood and carbon fiber:
Prime II is where the feel of wood meets the performance and endurance of carbon fiber, giving players an unparalleled experience at the table. Designed to offer the best of both worlds, this shaft seamlessly blends the natural feel and flexibility of a wooden shaft with the stability and precision of a carbon fiber one.
There are shafts made of carbon fiber---but only inside---with wood outside. There might be something to this given many players’ positive responses to them. So far, wood-over-CF shafts include:
Predator Centro and C8; Mezz EX Pro; McDermott G-Core, i-Pro, i-Pro Slim, i-1 Big Boy, i-2, i-3; Pure X FUZE Kielwood Carbon Fiber InFUZED Solid Shaft; Lucasi Pro Carbon InFUZED 10S; Bear RB-1; Fury LC series, Fury ST2 Hybrid series, Fury Merlin; CueLees EX Solid (combo extraordinaire with CF-only on bottom few inches and wood/CF for rest of shaft), CT-1 & CT-2; OB Cues Fusion (no longer available); Predator BK3 Sport Break cue and its BK3CF shaft (not available on Predator website); Predator BK2 break shaft; JFlowers SMO-W.
Cuetec R360 (note its fiberglass ---not CF--- inside; Fiberglass exterior/Wood inside shafts: Cuetec Avid.
JFlowers SMO shaft:
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