Casters Chair

Casters Chair
How do you fix marks on carpets?

we have just had new carpets fitted all over however,there are deep indentations where chairs etc are on the carpet,we have tried putting thin pieces of wood under the casters but you end up with larger marks.
I heard somewhere that a warm iron may remove them but have not tried that.I will be grateful if someone can advise me on the safest and best way to make the carpet flat we like to move the furniture round now and again.

The website below has a couple of options, but it does say don’t iron the carpet as you could burn it.

Old Goat’s Redneck Chair Repair