I've recently been reading about how much difficulty people have had preparing opana er for injecting. It's not difficult, and you don't need to do anything crazy. It's actually pretty simple if you think about it. Oxymorphone originally came in 1mg ampules for injection. Opana er comes in 20mg and 40mg. The oral bioavailability is only 10%, and snorting doesn't really change it that much. You only need a few mgs if you're iv-ing, and thats the key. Here's What I do:
Take about 1/10 - 1/16 (a tiny tiny piece) of a 40 and crush it
Using a 100 unit syringe, add about 170 units, and stir
Heat to a ROLLING boil
(Get yourself a refillable butane "windproof" torch lighter for heating, they work best)
add cotton, and draw it up
It's not the strongest rush, and depending on your tolerance you may need to do a few of these injections in order to get where you want to be, but it's WAY better than snorting. I've been doing this for about two weeks now with no problems (except a huge tolerance now). It sucks that you can't get a huge rush (and probably need 2-3 injections) but you're getting much more out of the pill than doing it any other way. I figure that if you can get your hands on a 3cc or 4cc syringe, you can ajust the recipe accordingly and get a better shot. Thats my next goal. Good luck!