and last, what percentage is good take 99% or under? Matteo
--- M come Meteorite Meteorites <[EMAIL PROTECTED]> ha scritto: > where is possible found NaOH? Here in Italy the > prices > its exaggerated, want 100 Euro for a 50g bottle... > > > Matteo > > --- Marcin Cimala <[EMAIL PROTECTED]> ha scritto: > > > > So I´m very sceptical! > > > > > > Ingo > > > > > > P.S. Let me know the results (also in a long > time) > > Pierre. > > > > > > This could be best example. Dronino. > > My 5kg endpiece was cleaned in water and NaOH. > Then > > it was cut on EDM and > > cooled by mixture of water and oil (and slices > > usually lie in factory for 1 > > days before I take them). Then I etched them, > clean > > in water, then in > > alcohol. > > They rust ? No. > > > > Ofcourse not every meteorite is the same. My > > mundrabillas are stable but I > > still have one endpiece that rust all the time. It > > was re-etched 3 times > > now. Can't win. Small rust in the same 2 places. > > Just bad specimen. > > > > Morasko "ruster" ? So why my 2 big endpieces > without > > any protection are > > stable ? I cleaned 5kg endpiece using > > electrochemical method for seweral > > days (water + NaOH). Then clean in alcohol and > > secured by Balistol. The same > > to slices cut from 6kg specimen. All was in cold > > room only with Balistol as > > protection. Stable. And also was cut on EDM and > > cleaned in water after > > etching. > > > > And most of this specimens I have etched months > ago. > > So Im sure that they > > are stable and can guarante this. > > > > Some years ago I was panicked when I must work > with > > "rusters" like my 6kg > > Nantan from eBay that I cut on my saw for 7 hours > > (in 2 days). It was all > > the time in water becouse it can't be removed from > > saw before cutting end. > > Status after 2 years ? > > Stable. 100% on etched surface and 85% on "crust" > > surface. But it have > > weathered rust outside and this is why there are > > bubbled of red water on > > some places. Now Im woking on it to remove rust > and > > make it pretty silver > > from outside. But its stable. No rust, only drops > of > > water. > > > > So Im very calm in using water in meteorites. In a > > short time ( minutes). > > Only sometimes hours are secured (f.e. cutting) > > > > -----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]----- > > http://www.Meteoryt.net > > [EMAIL PROTECTED] > > http://www.PolandMET.com > [EMAIL PROTECTED] > > http://www.Gao-Guenie.com GSM +48(607)535 195 > > --------[ Member of Polish Meteoritical Society > > ]-------- > > > > ______________________________________________ > > Meteorite-list mailing list > > [email protected] > > > http://six.pairlist.net/mailman/listinfo/meteorite-list > > > > > M come Meteorite - Matteo Chinellato > Via Triestina 126/A - 30030 - TESSERA, VENEZIA, > ITALY > Email: [EMAIL PROTECTED] > Sale Site: http://www.mcomemeteorite.it > Collection Site: http://www.mcomemeteorite.info > MSN Messanger: spacerocks at hotmail.com > EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ > > > > > > > ___________________________________ > Yahoo! Mail: gratis 1GB per i messaggi e allegati da > 10MB > http://mail.yahoo.it > ______________________________________________ > Meteorite-list mailing list > [email protected] > http://six.pairlist.net/mailman/listinfo/meteorite-list > M come Meteorite - Matteo Chinellato Via Triestina 126/A - 30030 - TESSERA, VENEZIA, ITALY Email: [EMAIL PROTECTED] Sale Site: http://www.mcomemeteorite.it Collection Site: http://www.mcomemeteorite.info MSN Messanger: spacerocks at hotmail.com EBAY.COM:http://members.ebay.com/aboutme/mcomemeteorite/ ___________________________________ Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB http://mail.yahoo.it ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
