This is such an easy thing to do,once you know.P doesn't want you to kill yourself..this may be the possibly the safest way.
P has a garden sprayer,in which is concentrated NaOH.A new outfeed hose,made from clear 1/2 inch PE tubing goes into another sprayer's outfeed line,and this number 2 sprayer has MeNH2.HClin it.Now this second sprayer,from it's overpressure valve port (valve removed) has a line (outfeed for the gas)going into another sprayer (the same idea as number 2 sprayer) but number 3 has a hose running from the infeed to the bottom of the sprayer.This is filled with CaCl2 to dry the gas.
From this outfeed (the removed pressure valve again) a hose runs to the cooler.
Next is a white 8 inch diameter pipe,the type for water or sewer lines,the bottom properly epoxied with the proper cap-about 1 meter tall.Inside this is a glass tube just over 1 meter long (from a neon sign shop)exiting from the bottom (and sealed with epoxies and sealers)and exiting through an unglued top.The glass tube is supported at the top.P's freezer goes to -30 C,and the plastic pipe is filled with a supercooled brine solution.
Pump a little on the first sprayer,NaOH moves up the tube and hose,drips (into number2)onto the MeNH2 which forms a gas.Next it goes out the tube and down into the bottom of number 3 to rise up and be dried through the CaCL2.Next it goes down through the glass tube in the supercooled brine and condenses to the freebase form.This oozes out into a short hose into a flask in a container with more brine and some supercooled methanol.Weigh everything first so you know what you have.
Between number one and 2,P has a T valve from a hydroponics store-the normal flow goes straight through the T,and P has another pressurized sprayer,in order to purge the leftover gas in number 2 through the freebaser when it is all done.Just so you dont get gassed when opening it all up,P can also uses water after the air purge.
Also P has a cheap vacuum gauge on number 2 to let him know when she is starting to suck back,then P gives her another little shot of NaOH.
P is a visual person,and all this may sound complicated,but just buy all the sprayers(must have a removable over pressure valve)some hose and tubes and some epoxy and get at it.It may cost$150,but is worth it.
P messed around with horse syringes with NaOH in them into containers with the amine , and into ice cold MeOH but the gas is too hot (P guesses)and 90% just bubbles right through the MeOH,regardless of stirring.
Epoxy and clamp every hose,seal any possible gas leaks with great fervor.In 2 and 3 P chopped off the air pump and epoxied a seal onto what was left.They still screw in and out with the chopped off handle.
Resist the temptation to make more than what you need.P got greedy one day and made a "bit much" to be stored in the freezer and....the power went out.The freebase vaporized at -6C or whatever and blew the container to pieces.The freezer and area was not in the home by design,but this saved P's neck.
Remember this stuff is damn nasty and deadly poisonous,and be very careful.Don't do it in the house or near neighbours-and if things start hissing,don't be afraid to run for it!In fact, P does not recommend you try this at all.