Re: Fossil preservation techniques and materials, a short question

[echarter@xxxxxxxxxxxx]

You might try an inexpensive electric engraving tool - they work like a
mini-jackhammer - and are available at virtually any hardware store.

>Another method for removing limestone matrix is with a weak acid
>solution.. however test this method to make sure the acid will not
>dissolve the fossil also.
>
>.... the best tool to use on fine work - is patients...  :)
>
>ONeal
>
# Black used a dental drill on Peking Man in China which was in a
conglomerate rock. He died of silicosis 5 years later. Wear a Racal
air-stream helmet if using grinding tools. Dremel makes a variety
of hand held rotary grinding tools for metal work which will work here. 
again..wear an active dust collection mask AND use a welder's dust and gas
air stream suction-collection unit. The Racal was used at Denison mines, 
uses 3 filters and a fan, has a clear vision visor and operate off a battery
and collects 99% of air-stream dust. Its the dust that you can't see that
kills you.

For larger jobs the best is the Chicago Pneumatic line which work off 
compressed air and they have 9 and 14 lb air chip and/or rotary hammers. 
Langridges of Toronto sold a  pointed carbide tool or chisel that can be 
mounted in special drill steel and put in various air and electric hammers
sold 
by Fujitsu and Dremel and Chicago. Here the local body shop may have a unit
that 
could interest you as well as forming tools that may help.

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