OK, as the one who first (or secondly...which is it Dwarfer?) suggested melting the metal & adding the solution of ions to the "wet" solution of E & NH3, I'd like to share an even more successful METHod of combining these reactants (IMHO).
First, get several bags of ice & place your rxn vessel in the ice, add acetone to drop temp, then put the desired amt of smelly in the vessel. (Dry Ice is better, and works nicely for recycling just in case you find NH3 hard to get). Add the metal (3g for Li, 6g for Na per oz) to the smelly. During this time, the E has been immersed in the ice, but be sure to double or triple up on the ziplocks, you don't want the E to get wet. Once the metal has fully disolved, if it's black & thick you don't have enough NH3. Add more, until the solution is deep blue & the solution is somewhat thinner. BTW, you probably won't have enough NH3 anyway, so be ready to add to the solution, especially if the mixture turns black during the reaction. Black is a sign that the ions are turning back to metal. The fix for this is NH3. The longer it takes you to reblue the solution, I theorize the more molecules are destroyed.
Once the solution is thin enough, quickly sprinkle the COLD E into the solution. Constantly stirring (a lab stirrer is a killer investent, and I suggest a Lightnin' Labmaster... it kicks ass), the reaction should be over in 10 to 15 minutes. If it takes less time, don't worry. However, be cognisant of any environmental factors which might eat up some of your precious ions. Anyway, you'll know that your rxn is through when the blue disappears leaving the white byproducts behind.
HERE'S THE KICKER: Give it at least 15 minutes, then hit it again. That's right, melt 1/4 of your original amount of metal in enough NH3 to keep it thin & blue. Add a little at a time until the blue holds. (Beware of the black syndrome, it's especially prevalent here. Be extra ready to add the NH3 right here). Once the blue holds for several minutes (remember, you only add about 1 tablespoon at a time once the blue holds for a couple of seconds, until it holds for several minutes) then your done. YOU DON'T NEED TO ADD H20 OR ICE (sorry Jacked). YOU DON'T NEED TO ADD LYE H2O (sorry Dwarfer). You haven't used enough too many ions this way to worry about quenching the reaction, and you've used enough NH3 to freebase ALL of the METH.
Remove from the ice. Add Wally World Camp Fuel (not xylene, not NAPHTHA, although Camp Fuel is actually NAPHTHA, its just a quicker dryer and much nicer odor, however this is merely personal preference) about 1/2 gallon per 8 oz of gogo.
Stir vigorously & remove from the waste. Here an old pair of panty hose comes in handy. Pour through the panty hose & then squeeze the shit out of it. That in and of itself will add 10%-20% to your first gassing's yeild.
Rinse w/ H2O about 20% of volume until the NH3 is no longer detectible in the Fuel. You'll know, just take my word for it!
Filter using 2 quart tea pitchers and Me@ita #6 Coffee Filters, separating the H2O out. Titrate or gass, and enjoy some of the best gogo you've ever bioassayed.
Just try this one time. You'll get slightly higher yeilds, and a complete reaction. You'll use slightly less NH3 than traditional methods, and you'll nail that motherfucker every time, guaranteed!