09-12-2022, 08:16 AM
Quote:To summarize, blur might SEEM to not be working, but it might be working and the effect is too small to see.
It is a big canvas. The blur tool goes back to earlier Gimp versions where images were much smaller and the tool was comparatively more effective. The edge blur is there when you zoom in almost at a pixel level. The amount of blur is increased with the 'rate' value but it is not indefinite. 8 to 10 pixels is it. No good applying over-and-over-again as your undo list shows.
The Gimp help page https://docs.gimp.org/2.10/en/gimp-tool-convolve.html does give advise on using other methods.
One strange thing from the undo list, the black-on-white line was 'painted' in with the eraser tool. Is that part of your actual procedure ?