Through Shelf Filament Guide for 1/4" OD PTFE Tube

Another Filament Guide that passes your Filament through a Shelf up to 5/8" thick. (you could probably scale the Z axis to make it further) Using ideas from some other designs I but a funnel on the spool side to make loading filament in easier, and made it so that my new 1/4" OD PTFE tube would fit snugly into the bottom and stay there through the printing process. Then I added a Retaining Ring on the bottom to help keep things aligned, just in case the hole I drilled in the shelf was a little