1.6c a couple of days ago is not a bad price!
I bought some last year for 0.8c, and more last year for 2.4c, I'm sure you'll find others around that paid even more, maybe even around 7c (2007).
It all depends on why you're holding?
Holding for a quick 10% in 1 week, well I'm sorry for your delay.
Holding for the company to get into production and first sales? Well, you've paid a good price, keep waiting until they're in production.
Holding for the company to have a takeover offer? Well, you also paid a good price, keep waiting
Will they make it into production? I don't know. I hope so. It's why I'm holding. Either that, or a takeover. I'm certainly not day trading something this small, that would be gambling!
Also, keep in mind that 1 month ago this was 1.3c on the ASX ...