First print didn't stick to base at all

I tried printing a simple gear for my first print. I imported the STL gear from thing verse, added supports, and then printed the item.

But nothing stuck to the base at all. It was coated in resin but absolutely nothing solidified on it.

I did see the laser. I’m using clear resin, and I something solidified on the bottom of the tank. Not much, maybe just a layer. It scraped off ok.

I’m not sure of the next steps. How do I best clean the stuff out of the resin tank? What mistakes could a first timer make that would prevent anything from attaching to the base?

Update: I went into “fine tuning” and lowered the base down farther, and the part does seem to be sticking.