Chain cutters have to be sharp, and balanced along the loop. It is possible to do this with a file, grinder, etc., but it is not ‘automatic’.
File guides like the STIHL/Pferd 2-in1 are good at maintaining / touching up a balanced chain, but will not fix a damaged chain without some attention to detail.
Simplest thing would be to have someone who knows how to use a grinder take all the cutters back to a uniform condition, including the depth gauges, then use the 2-in-1 going forward.
If just 1 or 2 cutters in a loop get messed up and filed back, it’s usually not a big deal. When several get out of whack, it’s best to reset them all and start fresh.
Philbert
File guides like the STIHL/Pferd 2-in1 are good at maintaining / touching up a balanced chain, but will not fix a damaged chain without some attention to detail.
Simplest thing would be to have someone who knows how to use a grinder take all the cutters back to a uniform condition, including the depth gauges, then use the 2-in-1 going forward.
If just 1 or 2 cutters in a loop get messed up and filed back, it’s usually not a big deal. When several get out of whack, it’s best to reset them all and start fresh.
Philbert