Brim Control  

Brim Control

Here is the top view of my print, sliced for a Prusa Mk3 S.  Note the scale.  These are very small parts.  I have selected a "brim" for reasons I explain below.

Right now, for a black filament (MatterHacker), I get no adhesion at all without the brim.  The elements, as shown in the second photo, are about 5mm high.

I found that adding the brim works; the adhesion is good.  The problem is that the brim is run inside the center of each part.  I would like something that looked like this (OK, I just erased pixels using Corel PhotoPaint, but you get the idea).  It is all but impossible to remove that one-extrusion-width brim from the inside of the gap.  With my eyesight and hand tremor (I'm 75) it is a serious challenge.

Is there any way to get this?  I really don't want to have to edit the G-code file by hand.  I create 9 at a time, but I have to print about 90 in each color (black, brown, red, orange, yellow, green, blue, violet, gray and white, the standard resistor color code) for my application.  Since I have six colors left to print, I would not be surprised to hit this again.  Yes, I know I only need two files (brim and brimless) and should not need to re-slice. 

But it would be really nice to be able to magnify the image like this in PrusaSlicer and select sections of extrusions to remove.  Or, if you know of a G-code-based editor that would let me do this from the picture of the G-code (like the above), please give me a link.

I'm also attaching the .stl file I use; it represents a single clip.  Design is done in OnShape.