[Coral-List] Drill Inquiry

[Edson Faria Jr]

Hello Margaret,

Recently I bought one  Nemo Divers Hammer Drill and I already did around 6
dives using it.

I have both batteries, 3A and 6A.

Here, in Brazil, I am drilling rocky reefs, made from hard granite, using 6
mm drill bits. It's not an easy task but definitely works. For each
hole, (around 3 cm deep) I spend 6 to 8 min. However, on softer substrates
like coral reefs, it should be much easier. Today, if I had more money,
surely I would buy the  SDS Rotary Hammer.

In my experience, I think the 3A battery could least 1 hour of continuous
drilling, and the 6A probably double that.

Here you can see a small video of myself using the drill:
https://www.instagram.com/p/Bgw_P4HlvpI/?taken-by=edsonchuck

If you have any further questions, it is a pleasure to help.

Best wishes.

Edson Faria Júnior

Biólogo/Mestre em Ecologia - CRBio 081980
Pesquisador Projeto Coral-Sol
BrBio - Instituto Brasileiro de Biodiversidade

PADI Dive Instructor

2018-04-23 14:06 GMT-03:00 Margaret Miller <m.miller at secore.org>:

> Dear Coral-Listers,
> We are contemplating a significant investment in one of the new battery
> operated underwater rotary (Nemo V2 Divers Edition) or hammer-drill (Nemo
> Divers Hammer Drill).  I would appreciate to hear from folks who may have
> experience with either of these.  How many holes on one battery charge (3
> vs. 6 amp)? What types of reef substrate have been successfully (or not)
> drilled. Please email me off-list with any advice.
>
> Many Thanks,
> --
> *Margaret W. Miller, PhD*
> *Research Director*
> *SECORE International*
> *www.secore.org <http://www.secore.org>*
> *614.973.3559*
> m.miller at secore.org
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