I was reading that you can use this to add weight to your arrows. Is this okay? Or are other methods preferred?

Tried it, too loud unless you glue it in but there are better ways to gain weight.  Brass inserts and weights are better ways to gain weight and you get a quieter, more consistent weight system that won't move within the arrow ( tip to knock like the line will try to do.)

if you want high foc with a higher overall weight ,use the brass inserts with heavy heads. if you just want more weight , the shaft inserts from 3 rivers work for their specific size shafts. i have a bunch if you would like to try them ...pm me. using weed eater line,sand, tubing ,etc. is a waste of time . use the shaft inserts or high head weight.

Brent is right.  I tried the weed wacker line and it rattled inside the arrow and sounded terrible.  There are better ways to increase the weight of your arrows IMO.

Pull your insert out, clean the end of the arrow and force it into blue or pink  foam board that will add weight and be quiet.

Mini or regular aquarium tubbingh works better than weed line.

Cut it about a 1/4 inch longer than the shaft....and when you glue in the insert it will 'scrunch' it a bit for no rattle.

I also put some glue on the bottom of the insert to the tubing is bonded to the bottom of the insert.

Great way to up your arrow weight bout 100 gains.

If you kink the weed wacker line every 4-6 inches it will eliminate any rattling around in the shaft. However, I solved all my arrow weight problem with carbons by going with higher FOC.

I used weed whacker line... but it just happened to work out to the perfect length. I cut and weighed the line until I got exactly 100 grains... then I inserted it into the carbon arrow and WOW... it just happened to fit real snug. No rattle, no movement that I can detect.

After weighing one, you just cut any other ones needed to the same length.

Works for me.

QuoteOriginally posted by Terry Green:
Mini or regular aquarium tubbingh works better than weed line.

Cut it about a 1/4 inch longer than the shaft....and when you glue in the insert it will 'scrunch' it a bit for no rattle.

I also put some glue on the bottom of the insert to the tubing is bonded to the bottom of the insert.

Great way to up your arrow weight bout 100 gains.

I played around using tube like this "clear poly from the hardware store" One thing that was sorta fun was to shoot a little silicone caulking in the front of the tube and press some tight fitting lead shot into the caulk.

I've used yellow poly rope with no noise. Adds about 80 grains. Didn't seem to affect shooting and doesn't seem to affect spine too much.

JW

QuoteOriginally posted by Brent Hill:
Tried it, too loud unless you glue it in but there are better ways to gain weight.  Brass inserts and weights are better ways to gain weight and you get a quieter, more consistent weight system that won't move within the arrow ( tip to knock like the line will try to do.)

I agree with Brent, my mileage has been the same.

QuoteOriginally posted by Jock Whisky:
I've used yellow poly rope with no noise. Adds about 80 grains. Didn't seem to affect shooting and doesn't seem to affect spine too much.

JW

I'd be real careful with rope or chord, it'll end up on the front end of the arrow over time and is a real bear to remove. It'll also cause internal pressure to the walls of the arrow over time.

Second the rope.  I got a little extra umpf with nylon rope. No change in spine.

What I read was the guy took about 3-4 strands that would fit snug, taped them together every 4 or so inches and pushed them into his arrows.

Weight chances spine.  Not much, but some.

I have been adding a lenght of 8/32 screw to the back on the insert glued in place. A lot cheaper then brass inserts.