I have a dent on the rear arch and was looking at how to remove.
You can use proper tools.
Have also seen the use of screwdriver back to push out the dent.
There are different types big and really small.
Mine is tiny like less than 1cm diameter.
I tried with a screwdriver but was unable to locate the area properly and did not want to make it worse.
The other day I noticed euro car part had a set of tools including small hammers and dollies I think that is the name for the proper tools.
Anyhow they are Amtech brand if still available it was like 30 quid.
I have also tried a dent removal tool that was cheap you use glue it may work on larger dents but did nothing noticeable in my case.
There is a nack to removing dents and dings.
My concern is the rear arch panel if damaged is a larger area and you can't just replace it very easy.
Obviously worst case you could fill the area.
Anyhow hope this may help you out.
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