Unfortunatelly, both the "VBR" brushes and the sizing slider used for paint tools is not too apropriate to have a fixed size brush with this accuracy. The way to do it is really create a 10x10pixel image, convert it to grayscale, paint it black, and export it as a
.gbr file to one of GIMP's brush folders (which you can find, or create a new one at
However, I would not recommend the approach you are taking for what you want to achieve - as GIMP's grid system which would allow you to actually paint at 10px round coordinates is a bit "soft" in its snapping, and you would ed up doing a lot of undo/redo -
The most practial way to draw a maze with square block walls is:
- create an image 10 times smaller than the desired one.
- Use the
pencil tool, and set the brush (almost any brush will do) size to "1" on the tool options dialog. Don't even worry about the original brush size.
- Draw your maze working at 1000% (or larger) zoom factor.
- When maze is done, enlarge image, setting interpolation to None to prevent pixel blurring:
Image->Scale Image..., type "1000%" on the width field, and let GIMP calculate the final image size, and change the
None on the "Quality" drop down.
- Export your image, and proceed to draw details smaller than 10px, if any.