Lubing my chain is always a bit of a pain as I try to get a steady stream of lube on the chain with one hand and rotate the crank arms with the other. Invariably, somewhere along the line the tip of the bottle slides off the chain causing me to miss a section or make a mess, usually both. 

I conceived this idea for a simple guide to help keep my lube bottle tracking with the chain, and it works incredibly well. Not saying that chain lubing has become my favorite thing, but it's made it a lot less frustrating. 

Since most lube bottles have different shaped tips, I figured I had to start somewhere.  I built this around one of my go-to lubes, Finish Line, seeing as it's a pretty commonly available chain lube and should have a reasonably-large user base. 
For lube instructions from Finish Line, watch the following tutorial: 
http://youtube.com/watch?v=qbi6JO\_XGrk

Print using PETG, with or without support. In my testing it prints just fine without any support, but YMMV.