Actually, I know that a lot of people ask this question, but I'm VERY interested to know this...
Most people ask it because they want to save some money (which is kinda stupid not to just spend the $25).
I can get Testosterone phenyl-propionate in 100mg/mL strength CHEAP (100ml, around $200!), and have always wanted to make a Testosterone phenyl-propionate and Fina mix. However, I just don't need the oil or vials that come in the kit...
Think about it, 100mgs of Testosterone phenyl-propionate and 100mgs of fina per mL!!! That would be a great thing!!! Inject 1cc a day, or reduce the fina dosage to 50mgs/mL and inject 2 cc's and damn!!! I'm getting excited just thinking about doing it!