How can i fix fiber optic cable ?

Try looking for a tutorial in youtube?

The process is basically something like this...

Insert one end thru so it protrudes about 2 mm. Heat that protruding tip with a flame and as soon as it melts and forms a molten bulb, give it a slight tug backwards and it will sit in snugly on that end. The melted bulb will form the first anchor.

Now, snip off the other end, again leaving about 1-2 mm. Heat up this other end. What should happen is that the melting end starts to create tension and tighten on itself, making a nice straight fibre installation. Do not get any heat on to the centre of the fibre or you will just deform it. Hope this description helps with ypur reinstallation.

I can't be precise about how much to excess length to leave but if you estimate it right, it will work out. About 1 to 2 mm. If its too much, the fibre wont straighten and the bulb will be too big. If it's too little, it might not work... a little trial and error mighy be required?

Good luck!

Erhan Sennur said:

vince4242 said:

Even if the fiber optic tube is bent in a c at a short distance, if you feed it through both ends of the slingshots sight supports then it will definitely straighten out once you burn both ends while it's inside the slingshots support.

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Thank you, it's a small problem but if i use more than 2cm length there is a little curvature..

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We all go through a little trial and error to get it right... if you get the length of the end right it will straighten out as it melts. The shrinking creates the tension that straightens it. If your first installation left a curve, just start over and leave less excess the next time... good luck!