I like this solution. I just ordered a couple LM393 and they will be here on Saturday. It'll give me time to get the rest of my project setup to start testing. I know this is overkill, but I'm doing this for more of recreational/learning experience. My backup plan is the 2 external premade mosfet's I also bought for the 3d printer, but I really wanted to go through the process of rolling my own. It's been so long since I did anything electronics related. I've tinkered.