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Seems like $300 is a lot for something that isn't drilled correctly.

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the dust, which could enter your skin/bloodstream and causing cancer."
Someone in the CF industry told me that.

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Potential Health Effects:

Eye: Dust may cause eye irritation

Skin Contact: Dust may cause skin irritation.

Skin Absorption: Not expected to be a major route of entry.

Ingestion: Not known

Inhalation: Small graphite fibers or dust are suspected as being possible
inhalation hazards.

Chronic effects: A review of the literature does not show obvious long
term hazard.


Carcinogenicty: No component known to be present in this product and is
at > 0.1% is presently listed as a carcinogen by IARC
or OSHA unless other wise noted.

Routes of exposure: Inhalation

Permissible exposure:
15 MCCPF OSHA TWA, 10 mg/m3 ACGIH TWA (Total Dust)

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A quick calculation (using my rusty math) of the permissable continuous exposure shows 10mg/m3 would be reached if one drilled 187,321 holes per hour in thin material in a closed shop with no active ventilation. While acceptable this would not be advised. A chemical fume hood is advised if occasionlally cutting rolls of the material.

While any activity can subject one to dangers working with thin carbon fiber OTA for a short period using safety precautions provided with a drill or Dremel tool does not, according to MSDS published data, present any toxic exposure. Literature indicates less exposure than working with plywood (Formaldehyde content) or pumping gasoline.

This product does show simlar inhalation exposure as carbon fiber and similar precautions should be exercised when using. This would include respiration and ear protection. The dust does present a fire problem and should be handled with care. Chemical fume hoods should be considered in all areas of use.




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Jerry

Meade 14" ACF, 102ED Celestron C-11, C-6
Tak FS-152, TOA-150, FS-78, FS-60c, Orion 102ED
AP-1200, Mach 1, CG-5

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