Hey stoners! I bought a O Pen and I absolutely love the pen but I don't love going to the store to pay a redic price for a new .25g refill cartridge when I can get two grams of bho for the same price and fill it myself.
Does anyone have any advice or instructions on how to mix the bho with glycerin and refill the o pen cartridge?
Does anyone have any advice or instructions on how to mix the bho with glycerin and refill the o pen cartridge?