giovanni56 Posted February 2, 2022 Report Share Posted February 2, 2022 Woofer di recupero Ar200003, passato nelle mani di uno pseudo tecnico domenica, uno scempio. Rimosso il ciarpame che aveva imbrattato su tutto il cono, tolto la sospensione in gomma SR250 di diametro più stretto, ricondizionato i ragni, ricostruito i bordi del cono, ricostruito e installato i bordi di masonite sul cestello che ne fanno uno spessore per il corretto posizionamento della bobina sul traferro, (lo pseudotecnico l'aveva rimossa per installare la sospensione in gomma SR250), installato la schiuma idonea, ricalibrato i parametri del woofer, e' stato un lavoro estenuante, ma il risultato e le misure sono a mio parere molto buono. Quote Link to comment Share on other sites More sharing options...
Stimpy Posted February 2, 2022 Report Share Posted February 2, 2022 Maximum effort, with commendable results. Well done! Also, what did you use to remove "the crap that he had smeared all over the cone"? I've got AR woofers, that someone coated. I'd like to get rid of it too. Thanks. Quote Link to comment Share on other sites More sharing options...
giovanni56 Posted February 2, 2022 Author Report Share Posted February 2, 2022 2 hours ago, Stimpy said: Massimo sforzo, con risultati encomiabili. Molto bene! Inoltre, cosa hai usato per rimuovere " le stronzate che aveva imbrattato tutto il cono"? Ho dei woofer AR, che qualcuno ha rivestito. Vorrei liberarmene anche io. Grazie. Toluene, Acetone, Nitrol Thinner, Paint Stripper Quote Link to comment Share on other sites More sharing options...
lARrybody Posted February 3, 2022 Report Share Posted February 3, 2022 I have some AR 10pi woofers that I need to clean up. I will experiment with Toluene and Citrus stripper. Will pick up some Acetone and Nitrol Thinner. Quote Link to comment Share on other sites More sharing options...
teknofossil Posted February 3, 2022 Report Share Posted February 3, 2022 Try goof off. -T Quote Link to comment Share on other sites More sharing options...
giovanni56 Posted February 3, 2022 Author Report Share Posted February 3, 2022 11 hours ago, lARrybody said: Ho dei woofer AR 10pi che devo ripulire. Sperimenterò con Toluene e Citrus stripper. Preleverà un po' di acetone e diluente nitrol. Sometimes, ethyl alcohol is sufficient. Quote Link to comment Share on other sites More sharing options...
Stimpy Posted February 3, 2022 Report Share Posted February 3, 2022 22 hours ago, giovanni56 said: Toluene, Acetone, Nitrol Thinner, Paint Stripper Thanks! 👍 Quote Link to comment Share on other sites More sharing options...
DavidR Posted February 3, 2022 Report Share Posted February 3, 2022 3 hours ago, Stimpy said: Thanks! 👍 ALL nasty solvents. Wear nitrile gloves at the minimum and a respirator with carbon cartridges and/or work outside. Beware that acetone has a flash point of 0'F. I believe Nitrol thinner is a mix of xylene and methyl benzene. Toluene will pull fat out of your system right thru the skin and attacks all organs. Quote Link to comment Share on other sites More sharing options...
AR surround Posted February 4, 2022 Report Share Posted February 4, 2022 14 hours ago, giovanni56 said: Sometimes, ethyl alcohol is sufficient. I find that 91% isopropyl alcohol usually works if 70% doesn't do the trick. While not as nasty as the other solvents, inhaling large amounts of 91% isopropyl can cause all sorts of problems. Quote Link to comment Share on other sites More sharing options...
Stimpy Posted February 4, 2022 Report Share Posted February 4, 2022 14 hours ago, DavidR said: ALL nasty solvents. Wear nitrile gloves at the minimum and a respirator with carbon cartridges and/or work outside. Beware that acetone has a flash point of 0'F. I believe Nitrol thinner is a mix of xylene and methyl benzene. Toluene will pull fat out of your system right thru the skin and attacks all organs. We keep all of those solvents at work. There's a fume hood too. So, if needed, I could come in on a Saturday and strip the woofers. Thanks for the warning...! Quote Link to comment Share on other sites More sharing options...
giovanni56 Posted February 4, 2022 Author Report Share Posted February 4, 2022 Il 02/03/2022 alle 23:00, DavidR ha dichiarato: TUTTI i cattivi solventi. Indossare almeno guanti in nitrile e un respiratore con cartucce di carbone e/o lavorare all'aperto. Attenzione che l'acetone ha un punto di infiammabilità di 0'F. Credo che il diluente Nitrol sia una miscela di xilene e metilbenzene. Il toluene estrarrà il grasso dal tuo sistema proprio attraverso la pelle e attaccherà tutti gli organi. Unfortunately, it's true, they are all dangerous solvents and should be used with caution, protective clothing or outdoors. Quote Link to comment Share on other sites More sharing options...
DavidR Posted February 4, 2022 Report Share Posted February 4, 2022 4 hours ago, giovanni56 said: Purtroppo è vero, sono tutti solventi pericolosi, da usare con cautela, con indumenti protettivi o all'aperto. Translation: Unfortunately it is true, they are all dangerous solvents, to be used with caution, with protective clothing or outdoors. I worked in a coatings and printing facility and was the manager of 2 solvent recovery systems and a distillation system. Was also 'rewarded' with a dual role of EHS Manager. The problem with toluene is that they keep lowering the threshold limit value, over and over. So what was OK when I was working with it is now a dangerous environment. Quote Link to comment Share on other sites More sharing options...
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