I am a little over 30 hours in now. About the half way point. I honestly expected something to quit. Filament issues, heat issues, drive wheel clog. You know, anything.
I did run into an issue this afternoon, it got about 90 degrees in my little shop building. I noticed that the filament was sagging and was generally rough. Tried adding a fan to blow air across the whole router. Turned the heat down a bit on the nozzle as well. I think it got to cool as the filament stopped flowing. took me a few seconds to get the heat cranked up and get ooze oozing again. I am also testing different heat settings on the nozzle. Make a small change and let it print an hour or so. This way I can see what changes where made in the layers of the model when its done. I am getting some good data from this print test. The power to the heater block is nothing more then a small transformer and a home light dimmer switch. No way of actually measuring temps. So I have my volt meter attached to the wires going to the heater so I can get a voltage range and see which voltages gives nice smooth walls with the fewest strings.
My shop is actually in our neighbors yard. So I have to go outside, next door and into the detached shop. Sure its only 100 ft away, but I like to think I am efficient. I have a PC in the shop with a quick cam trained onto the mill. I use teamviewer to remote into it and watch it near real time.