I'm not too sure about dabbing static, but it sounds like you may not be using a high enough temp. I don't think static like this has much plant matter at all so it should melt at the right temps (it may leave some residue though). I also have to say that I wouldn't recommend pressing hash rosin from anything other than fresh, unpressed material. I've done a fair bit of experimenting and it seems like a lot of more "aged" hash, even 2-3 months old, produces a darker and lower quality rosin. That being said, I've never tried using static to make hash rosin, only stuff like bubble or high quality drysift, so if the investment costs are low (hair straightener, rosin bags and parchment) it may be worth a try! Just keep in mind that the temps need to be kept as low as possible!