The exact procedure from:
http://www.erowid.org/archive/rhodium/chemistry/amph.urushibara.html
was followed with the exception of substituting Al powder for foil. The addition of 3ml HCl and 1g Al gave no reaction whatsoever, after an additional 6ml HCl and 2g Al were added over the course of 2 hours, a violent reaction took place for about 30 seconds, where temps rose to 80*C, and most of the ethanol was boiled off.
Additional ethanol was added and the procedure continued. Upon basification, the resulting supernatant was a dark reddish colour rather than the described yellow. What went wrong?
http://www.erowid.org/archive/rhodium/chemistry/amph.urushibara.html
was followed with the exception of substituting Al powder for foil. The addition of 3ml HCl and 1g Al gave no reaction whatsoever, after an additional 6ml HCl and 2g Al were added over the course of 2 hours, a violent reaction took place for about 30 seconds, where temps rose to 80*C, and most of the ethanol was boiled off.
Additional ethanol was added and the procedure continued. Upon basification, the resulting supernatant was a dark reddish colour rather than the described yellow. What went wrong?


The author of that procedure was responsible for many procedures in wide use, obviously you' don't have the same skills and experience
You're going to have to study this route a lot more thoroughly, and expect a very bumpy road on the way to what you seek
There's some information about polymerization on that web page you linked to, perhaps you should read it again
The end results do really come from the effort applied 
They pose a security threat to the member :
As Jacked signature stated on the Hive, the end results from the effort applied