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10-19-2007, 12:53 PM
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#1 |
Name: Dave Snider City: Advance State: NC County: Davie Join Date: Oct 2007 Age: 64 Avg Visit Freq/Week
= 0.70 over 30 days |
Hi guys,
I am beginning a project in which I will be using some Cocobola. I have never used this species B4, and would like some input on the best way to machine and finish. I understand the dust from machining this material is quite "NASTY" however. 
Thanks,
Dave in NC |  
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10-19-2007, 01:06 PM
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#2 |
Name: Kyle Edwards City: Iron Station State: NC County: Lincoln Join Date: Jul 2005 Age: 42 Avg Visit Freq/Week
= 7.00 over 30 days |
I would wear a respirator and cover your skin. You may or may not react to it, but the reaction can be severe if it does occur. | |
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10-19-2007, 01:34 PM
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#3 |
Name: John City: Raleigh State: NC County: Wake Join Date: Sep 2005 Avg Visit Freq/Week
= 5.37 over 30 days |
I second Kyle's recommendations.
I have turned a few pens with cocobola and have found it to be very easy to work with. It is very hard, so keep your tools very sharp. 
The only time I've felt any problem with cocobola was when turning without a whole shop dust collector and then it was a slight irritation in my nose. Of course you want to wear a dust mask when sanding, as I'd recommend when doing any sanding on the lathe. Sanding produces the finest dust and I find I sneeze wood dust for several hours after sanding, if I don't use a dust mask.  | Other than the dust and sharp tools, enjoy. Post some pics when you make something. |  |
__________________
John
"Anything worth cutting down a tree for, is worth doing right." 
Cut to size, and hammer to fit. | |
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10-19-2007, 01:42 PM
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#4 |
Name: Dave Snider City: Advance State: NC County: Davie Join Date: Oct 2007 Age: 64 Avg Visit Freq/Week
= 0.70 over 30 days |
Originally Posted by jglord  I second Kyle's recommendations.
I have turned a few pens with cocobola and have found it to be very easy to work with. It is very hard, so keep your tools very sharp.
The only time I've felt any problem with cocobola was when turning without a whole shop dust collector and then it was a slight irritation in my nose. Of course you want to wear a dust mask when sanding, as I'd recommend when doing any sanding on the lathe. Sanding produces the finest dust and I find I sneeze wood dust for several hours after sanding, if I don't use a dust mask. | Other than the dust and sharp tools, enjoy. Post some pics when you make something. | | | What about finishing. Will this material accept any oil, or other external finish. I don't think it will. I was thinking about machining it and buffing with a clean, cotton floppy buff. Whaddayathink??
Dave in NC | |
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10-19-2007, 01:47 PM
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#5 |
Name: John City: Raleigh State: NC County: Wake Join Date: Sep 2005 Avg Visit Freq/Week
= 5.37 over 30 days |
I very strongly recommend using oil on Cocobola. I will really make the grain and color pop. I've also used the turner's build finish - a combination of shellac and wax, with great results. 
__________________
John
"Anything worth cutting down a tree for, is worth doing right."
Cut to size, and hammer to fit. | |
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10-19-2007, 01:52 PM
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#6 |
Name: Steve City: Raleigh State: NC County: Wake Join Date: May 2007 Avg Visit Freq/Week
= 5.83 over 30 days |
I haven't used cocobola but have heard that you need to clean glue joints with mineral spirits or some other solvent prior to glue up to remove oils that can reduce the glue's effectiveness.
- Steve | |
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10-19-2007, 06:51 PM
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#7 |
Name: Mike City: State: County: Join Date: Aug 2005 Avg Visit Freq/Week
= 0.00 over 30 days |
It is said there are two kinds of people; those who are allergic to cocobolo and those that will be...
I have had no reactions to cocobolo yet but some other people I know say that everyone will eventually succumb to its toxicity. John mentioned a slight tickle in the nose. I fear that is indicative of some sensitivity. Be very careful when working with the exotics as most of them seem to trigger ill effects on a lot of people.
As far as finishing, I sand cocobolo to 12000 using wax as a lubricant and then finish with wax. That is about all the finish it needs. It is very oily and some finishes can react badly with the oils and in a few week you will have a "sticky" finish. | |
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