Hi i was wondering if there is a circle brush that is just a circle i need it to fit in a 320x320 box i usually use the eclipse tool and make the circle and then use the eclipse tool again and make a smaller circle in it. I hate that it takes me forever to make one image. So basically i need one that is like the one i attached (the lime green one) I dont want the white in it at all. Can i make that transparent?? Also i would need to be able to make it bigger or smaller. It sounds like im rambling. So if you can either point me in the right direction or help me make it i would appreciate it.

Pretty easily
Open Gimp
select you elliptical selection tool
create a circle on a transparent layer that color with those fixed dimensions.
you can create a fixed circle by clicking fixed and choosing size in the drop down menu in the tools dialog for the selection tool options.
Now just go to Edit/Copy
Edit/Paste as new brush
25 for spacing is probably good
name your brush and save it the brush dialog will refresh and there is your brush ready to use anytime you need it.

Ninja'd me, Rod but I'm going to go ahead and post what I have to say.

Some questions first.

1. Will you always want it to be lime green? (If you make a grayscale brush, it will take on the foreground color if you want a different color.)
   
2. Your main circle is 320x320pixels (actually it's 318x318px) , how large do you want the smaller circle? Right now it's 262x265px. I assume you want the width and height the same.

What does that Spacing Do? If you don't mind me asking...
and I would never "color" a brush... as this always seem to come back and Haunt you when you want to have it a different Color.

Willy

Each time you click once on your image with a brush it's really a stamp.
The more spacing the more the stamps are separated from each other if you use it as an actual brush (one stroke).
Their are actually a couple reasons to color a brush - one main one is for say Mahvins Christmas bulb animated brush set.

Gee i hope i gave the credit to the brush to the correct person
If not i apologize.

Spacing is the percentage of distance between brush strokes.

Thanks guys, this really never made sense to me,
Hope everything goes well for coronel,

Willy

Thanks for the help i need the brush because i make hairbows and i also started to make all my own bottle cap graphics. I have been wanting to put a boarder around my images as ive seen done on the internet. It helps me at least to make sure i can fit the image i want in the size circle that i need so that when i print them out i can punch the image out with my 1 inch punch. Ill try what you told me and ill get back to you. Also i would prefer to be able to change the color of the brush as i dont always need lime green is there a way for me to do that??

Yeah, you have to save it as grayscale... although I am not really sure how I just save everything as default and it saves as grayscale for me.

I went ahead and made you a 320x320px grayscale brush with the inner transparent area 262x262px. I spaced it 100%. I zipped it. Download the zip file and unzip the brush into the /.gimp-2.6/brushes folder. Either refresh the brushes or close and reopen GIMP to find it in your brushes. It is called Ring Brush.

It will be whatever the foreground color is.

This is how you make a grayscale brush.

Open a new image, fill the background with white.
Make a new transparent layer, draw or make a black brush shape.

When your brush shape is finished, be sure that layer is selected, then
Image > Autocrop Image.

Right click the black brush layer and choose Flatten Image. (That removes the alpha channel)

Image > Mode > Grayscale

Save As > name your file - yours I saved as ringbrush.gbr. Be sure to put that extension on it.

Browse to /gimp-2.6/brushes folder and click Save.

This dialog will come up. It shows what I saved the ring brush as.