20mm version:
w/ 1mm exposed copper on GND rings.
https://oshpark.com/shared_projects/YeNzvLPx
Added to OP. I made no changes other than expanding the diameter and increasing the exposed copper from 0.5mm to 1.0mm.
Glad you like it fellfromtree. You should see the mess it’s based on. 
Check out the OP here, it shows v008 of the design which spawned this: [WIP][mostly retired] 17mm DD+7135 -- linear regulated driver w/ FET turbo
You’re welcome. I’m using a syringe of Kester EP256 (Easy Profile 256) from CML Supply. If you click through to the big version of the first pic in the OP (the picture with the tweezers) you’ll see that my application isn’t really perfect - R2 has a lot more solder than R1. Due to the low quality of the picture what you probably can’t see is that I reworked D1 with my soldering iron after the reflow. I was out of normal sized diodes so I used the tiny SOD-723 size. It blew around during the reflow process and was hooked up correctly but kind of askew and unattractive. That’s why those pads appear slightly shinier. To better illustrate, here are 3 pictures showing the components laid out without paste, then the components partially placed after adding paste with the syringe, and finally the initial results of the reflow (before rework). Sorry about the focus in the second pic, it’s on the back of the PCB rather than the front.
