I searched for de-badge, debadge, de badge, badge - but couldn't find the threads I know are in there somewhere.
If I recall, debadging started by gently "sawing" the badge off using nylon (fishing?) line or dental floss(?), then removal of any remaining adhesive with something.
What type line?
What solvent, and what type fabric were used for the adhesive removal?
Any help appreciated, esp. from someone who actually did it on their car. Also welcome comments on any method that did not work well.