A while ago (don't remember when) I gave an answer to a question about constructing Archimedean spiral using
NDSolve for a differential equation on curvature as the function of the arclength.
It so happened that I actually need to use the method I then described for some other task of mine. But I cannot find that anywhere anymore. Maybe the OP has deleted it, but I also don't remember who the OP was.
Is there any way to recover that answer somehow?