Originally Posted by
dksix
What did you use to do the drawing?
The chainring photo came off of the internet.
The editing was done with Gimp. FREE !!!!
It is a bit of a funky program to use
I chose "select by color" (white), then pasted it over the top of the original image. Then used "Layer Rotate" about 2°, I think.
Circle and square drawings are easiest accomplished by using the selection tool. Then choosing "select boarder", then "bucket fill"...
It is a pretty complete program, I'm not sure why it doesn't have the basic shape features that one might otherwise expect.
(BTW, I added another drawing above).