If one is not a "chemist" by profession, but needs access to Tetrahydrofuran, purchase 'thin type' PVC cement at any hardware chain. The main ingredient is the aforementioned solvent. It has an acrid reek unlike any other common solvent.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !