Heres all 3 methods of freebasing fumarates
The 10 minute tek just doesnt work for everyone.
only 2 methods are almost foolproof.
The slow pure white crystallization method.
Sodium Carbonate Paste and Pull method.
IF you still have that jar of carbonate solution with the spice,just let it dry at a very low temp(below 40degrees celcius)
and then pull with anhydrous IPA or Acetone.
Swim is a figment of your imagination and he's a compulsive liar,thus everything he says is pure lies !