It takes special equipment and line to make brake line.
If someone in your area has this equipment they can make new ones. If not you will have to buy them.
depending on the year make and model you might be able to purchase factory brake lines pre bent . from the dealer
need diagram of rear brake lines for 1993 mercury topaz
Front brake lines, 3/16". Front to rear, 1/4". Rear, 3/16".
The brake lines can be replaced by removing all of the retaining clips. The brake lines will need to be disconnected on both ends. Reverse the process to install the new brake lines.
Rear brake lines leave Master cylinder as one and are junctioned at the rear of the vehicle
3/16
If you are talking about the steel brake lines, most likely the rear lines, then replace both from front to back.
In most cases the front section of the master cylinder Rear brake lines are "T'd" at the center of the rear axle
change the wheel cylinders or the brake lines
about 2 foot on each side
one could be the lines need bleeding
When you work on brake system you want to remember to bleed the brake lines.
Fuel filler neck and vent, evaporative emission lines, brake lines, an axle vent, or rear washer hoses. What type of car is it and what size are the lines?