Trying to install new brake lines and keep getting small creases In the flare. I’m not using one of the expensive flaring tools but it’s a single size tool for 3/16” lines (see pictures). I have been practicing and making sure to deburr inner and outer of line but still occasionally get the crease that on 1/4 to 1/3 of the tube circumference. I’m interested if anyone has tips on how to improve my method and whether or not these creases are even an issue? See pictures.

Thanks
Attachments


1950 Chevrolet 1/2-Ton 3100