I was deminstrating a process of making adjustments to a printed file I downloaded from thingverse. I's a simple cable management system but helps to see issues and make adjustments between the prints. The print time is less than an hour if your settings are right.

Here you can see the bed tempeture is to hot and the print is pulling off the plate. Reducing the bed temp form 75 to 70 fixed this on the 3rd print

Low and behold the system broke later in the day while I was in a good run.

These are areas I want to illuminate for beginners so they can see these issues happen

The filament tube at

the extruder came out of the clamped end and when i discovered it there was 5 feet of filament spooled on the floor. This is pretty common and these are expendables. Having these kits on hand is a must.

 Spare tubing, fittings, thermals, this stuff is very inexpensive

replacing is easy but precision is required. The tube end that goes into the hot end has to go completely against the hotend tip. The nozzle end. The tube has to be cut perfectly square or when the filament is pressed into the hotend it will leak inside.  This is an example of what happens when you don't get this tube inserted and tight. Yes this is a silly design but it's simple, you just have to understand how critical this setup is. Also if the hotend fan gets clogged with dirt or loses performance the tube inside will get overheated and slow down or stop the filament from coming out. 

The plastic tube has to fit tightly against the Nozzle

lower the bed and watch the stream

3d printed item lets go