Select to expand quoteNotWal said..evlPanda said..Paul Kelf said..
The worst part after spending huge amounts on a big name branded boom is the grip falling off, clag just doesn't cut it guys 
North.
Loft.
Prolimit
Select to expand quoteeckas said..
Here's the pics. Draw your own conclusions.
(and just to be clear, the word 'severne' you can see in the pic is from another boom lying UNDERNEATH the boom that is the subject of this discussion).
The foam grip did say 'full carbon' (now says 'ull rbon' as my regripped section finished part way through the words!)and while obviously there are metal pins, plastic heads, foam grip, plastic rollers, my expectation is that the 'chassis' would have been full carbon.
I just re-gripped one of those on Sunday.
They are one of the better brand carbon booms.
The grip they use is rubbish but the glue is great.
The hardness of the grip is important, this brand is way too soft 
They are definitely carbon, in the arm area they are very thin glass inner, carbon middle & very thin glass outer. (total thickness is about 1mm in some spots)
The seam is from the mould and I have seen them split there for some reason so I sand them smooth while re-gripping.
I am not sure this brand are one piece though, the head looks to be a separate piece from the arms.
I put another layer of carbon over the entire boom to get the diameter up a bit as I find they are too skinny, oh and to strengthen it a bit as it was smashed into 5 bits by someone, initials "Damo"
Hopefully it's stiffer & stronger than before 
I'm keen for the manufacturer of said boom to post, put us all out of our misery AND tell us the finer points of the manufacturing process so we can all have confidence in their products. Added to which I'm sure they'll be happy about the feedback on the attributes of the grip and glue- they may even come to the party with some assistance..........and replace the tailpiece......who knows.
And I'm just keen to know which brand it is, because if I bought one, I'd inspect it very carefully first.
Anyhoo, they all break, just a matter of time and/or degree of getting munched by a wave/unexpected bullet/underwater obstacle.
Finally, where did you source the new boom grip, 'cos I've got two boooms that are still intact that I'd like to re-grip.
Hey guys I might be able to add something I learnt with so called carbon failure. If your product breaks and you can see the cross section get your electrician mates insulation tester(megger) to check for conductivity/continuity - Carbon is a reasonable conductor and fibreglass is a pretty good insulator (sparky's ladder). I found my multimeter set to "ohms" gave a result. The insulation tester can supply up to 1000 v ( very small current) and will penetrate a very thin exterior layer of resin and you will see the meter give a reading, and some electrical tracking if carbon ,nothing if fibreglass. Carbon is generally black and fibreglass is white and that should be reflected in your testing. If it is a new product see if you can have a look at the ends of the products for black carbon or black paint!. This is a failed RDM80% mast with a " floating spigot" and the retailer was excellent about replacing it for another brand. Don't forget optional lab coat and Bunsen burner to impress your mates!!. Oh and I think your gear is better tested in WA and NSW as they seem to get that thing called wind!
Select to expand quotemkseven said..
Jealous? Remo not putting out anymore?
I dont think anyone mentioned glass tube. Ive got four other carbon booms here & the one that broke is the only one that uses glass like that. I can accept glass used on mandrel but why is top layer there?
Regarding the cross-sections pic's, I couldn't say...
But there is a perfectly good reason for Glass on the outside... it has better abrasive properties than carbon.
I'm certainly no expert on carbon composites but did do some recent browsing on the subject with dreams of having a go at customising a carbon boom, as sail quick points out there are a variety of exotic fabrics and myself don't have a problem with different materials being used if it was done for genuine reasons I,e some have better abrasion resistance, heat, flex etc, I found most of the exotic fabrics around £20-30m2 carbon,aramids and hybrids with std plain/2-2 twill often being cheaper..would I mind a couple of layers of fibreglass? Not really, would I mind if it was 80% fibreglass with a couple of layers of carbon..er yes as at a couple of quid a m2 it's purely on making it as cheap as poss and we're paying a premium for the top spec boom!
I found looking at the prices of carbon the price varied quite a bit depending mostly on appearance, so looking at the photo could it be they put more attractive carbon on the areas people see with a lower grade/price carbon in the areas they don't, just a thought?
C'mon Barn we all prefer a mob with burning torches (didn't u even post that once with the Simpsons screencap that discloses one's age?)
Shame eckas' boom is just fine, I was looking forward to lynching a Chinese mould-layer-upper person
