CF in a Uke? Is that not like building a stick built home using all steel beams?
And, if you think you have tool issues now...
Mike
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| Author: | zac_in_ak [ Sat Aug 16, 2008 9:32 pm ] |
| Post subject: | weight of CF vs wood |
hi Guys I don't have any carbon fiber but am planning the feasibility of using it in necks and was wondering how much it weighed compared to the same size of standard neck materials ( ie mahogany spanish cedar ect) Thanks |
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| Author: | Bob Garrish [ Sat Aug 16, 2008 10:18 pm ] |
| Post subject: | Re: weight of CF vs wood |
About 1.5x the density of ebony, about 2.5x the density of mahogany |
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| Author: | zac_in_ak [ Sat Aug 16, 2008 10:36 pm ] |
| Post subject: | Re: weight of CF vs wood |
Bob Garrish wrote: About 1.5x the density of ebony, about 2.5x the density of mahogany Thanks ouch sounds like heavier then I want for a light uke neck...maybe stick to wood only |
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| Author: | Mike OMelia [ Sun Aug 17, 2008 11:44 am ] |
| Post subject: | Re: weight of CF vs wood |
CF in a Uke? Is that not like building a stick built home using all steel beams? And, if you think you have tool issues now... Mike |
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| Author: | zac_in_ak [ Sun Aug 17, 2008 4:14 pm ] |
| Post subject: | Re: weight of CF vs wood |
slackkey_mike wrote: CF in a Uke? Is that not like building a stick built home using all steel beams? And, if you think you have tool issues now... Mike  ok maybe that was a bit of overkill for a soprano but i figured if the density was close it was just a bit more insurance to nice stable neck whats the difference in weight between spanish cedar and mahogany? is there a place to look at the various densities of common instrument woods?
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| Author: | Mike OMelia [ Sun Aug 17, 2008 6:28 pm ] |
| Post subject: | Re: weight of CF vs wood |
http://www.exotichardwoods-southamerica.com/index.htm Mike |
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| Author: | Parser [ Sun Aug 17, 2008 7:54 pm ] |
| Post subject: | Re: weight of CF vs wood |
so how does the stuff cut?? |
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| Author: | Bob Garrish [ Sun Aug 17, 2008 10:37 pm ] |
| Post subject: | Re: weight of CF vs wood |
You need to cut it with a hacksaw or abrasive wheel because it's gross and likes to eat every kind of cutter, and it's pretty gross. I'd liken it to cutting the stuff abrasive wheels are made of, it's all black and dusty and icky. It's that way with most of the stronger composites. |
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| Author: | Larry Davis [ Sun Aug 17, 2008 11:01 pm ] |
| Post subject: | Re: weight of CF vs wood |
http://www.fpl.fs.fed.us/documnts/fplgt ... 3/ch04.pdf |
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| Author: | Mike OMelia [ Sun Aug 17, 2008 11:25 pm ] |
| Post subject: | Re: weight of CF vs wood |
That looks like a cool document...but try as I may, all my searches yielded no index of refraction! Mike 
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| Author: | Larry Davis [ Mon Aug 18, 2008 6:09 am ] |
| Post subject: | Re: weight of CF vs wood |
slackkey_mike wrote: That looks like a cool document...but try as I may, all my searches yielded no index of refraction! Mike What is an index of refaction for wood? I know what an index is and I know that light refracts..but...? |
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| Author: | Mike OMelia [ Mon Aug 18, 2008 7:24 am ] |
| Post subject: | Re: weight of CF vs wood |
I know I should not do this... viewtopic.php?f=10101&t=16893&st=0&sk=t&sd=a&hilit=index+of+refraction&start=25 Mike |
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| Author: | Mike Mahar [ Mon Aug 18, 2008 8:56 am ] |
| Post subject: | Re: weight of CF vs wood |
I was curious about this a few weeks ago and did the experiment. I have a 1/4 x 3/8 x 3" piece of mahogany and a piece of carbon fiber rod with the same dimensions. I also have a gram scale that is accurate to .1 grams. Because I never get around to putting things away, they are still sitting on my desk. I'd expect the carbon fiber to be consistent in density but the mahogany sample I have feels like it is light. I've notice some pretty wide variation in mahogany's density. Carbon fiber: 6.9g mahogany: 2.6g ratio: 2.7 |
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| Author: | zac_in_ak [ Mon Aug 18, 2008 4:50 pm ] |
| Post subject: | Re: weight of CF vs wood |
WOW that is a pretty big difference I think I will stick to wood for the little ones  is it really worth the trouble or is denser wood better at least safety wise? Hmm since I will only be building ukes or classical I think wood would be the better way to go. (low impact building for me ie less chemicals and things that are bad) |
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