make sure you have lawyer ahead of time that is familiar with federal and state drug cases. It is unreasonable to expect to find a lawyer who has handled drug *manufacturing* cases, but if you let them "know" ahead of time what you are interested in, and pay the requisite (and hefty) retainer, you'll be good to go if (when) the Man comes bustin' in. Your legal expenses for defending against a DEA levied manufacturing charge will be $15,000 plus, so keep that in mind.
There are many ways one can be prosecuted for suspected drug manufacturing, and the safest route the prosecutor can take is to just stick you with the precursors unless you were caught actually making it and/or you had product on the premises. I was caught with nothing being made and nothing on site, but the prosecutor was greedy and charged [blank] and me with "Conspiracy to Manufacture MDMA, a Controlled Substance Analogue" anyway. I waived my right to a grand jury to be nice, and because there was no point in being formally charged since they had enough evidence to convict me of *something*. I was then offered a plea agreement that, of course, gave me nothing except taking away my right to appeal. My lawyer advised me to plead guilty, but NOT sign the plea agreement. This is known as "pleading open\rdblquote and shows that you accept responsibility for your actions without the potentially damning loss of your right to appeal an unfavorable sentence. I don't regret this at all even though it royally pissed off the prosecutor because I still get the 3 level reduction for pleading (more on this in a moment). However, my pleading open made the prosecutor so mad that he then filed a motion to have me detained prior to my sentencing (i.e. - thrown back in jail). The detainment hearing was, fortunately, quite laughable because I had been complying with all of my pre-trial bond restrictions (no drugs in the urine, no arrests, I had a "real" job and was enrolled in school), still, if the judge was in a bad mood that day it could have been a trip to nasty, razor-wire engulfed Morgan Street for me.