This is a “Twin Loop” sling I made for throwing tennis balls. I am sure the idea can be resized for any other round object.

This Twin Loop sling performs very well and is very, very quick and easy to make. Please see this discussion about the performance of the Twin Loop sling as well as ideas for different variations of this Twin Loop sling:

https://slinging.org/forum/YaBB.pl?num=1780366421


Here is a pic of the Twin Loop sling and the tutorial for making this sling is below.

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Step 1.  Take two separate pieces of paracord and tie a 3.25” loop at the end of each cord.

These loops are each 1/2 of the pouch so it is important that each loop is identical is size if you want a nice, symmetrical pouch. If you don’t care the pouch is symmetrical then each loop can be a bit different in size.

I used a figure 8 follow through knot to make each loop. But any knot will do I suppose.

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Step 2:  tape the center of the loops together.

I used masking tape. But perhaps duct tape would be better (see next step)

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Step 2, continued:  with the center of the loops connected by the masking tape, you can see the pouch shape that was created

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Step 3: permanently connect the center of the paracord loops and the pouch will be finished.

IMPORTANT: the centers of the paracord loops should permanently fixed together over a distance between 2.25” to 2.50”.  This distance forms the pouch to tennis ball size…so adjust this distance if you are using some other size ball.


Option A: since this sling is for tennis balls, very likely just duct tape would do the job of keeping the paracord loops connected. Just make sure you use enough layers of duct tape so that the loops do not fly apart as you spin the sling.  This is the easy, fast option.

Option B: using #18 nylon mason line, connect the centers of the paracord loops with whipping. This is the option I chose and it did not take too much time to do. Perhaps it is more durable than duct tape as well (?)

In any case, I did not have duct tape on hand but I have plenty of mason line, so option B was for me!

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Step 4:  just add your finger loop to the retention cord and also a knot at the end of the release cord and you are finished.

I did not measure how much extra cord was needed to make the loops at the pouch end, but if you just make and tie the first 3.25” pouch loop before cutting the paracord to length, you can then unspool the paracord from spool to the exact length you need (the end of the 3.25” loop being the center of the pouch)

Here are pics of finshed pouch

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Another pic

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After throwing a few tennis balls, the Twin Loop sling performed very well and there was no sign the mason line common whipping suffered any ill effects trying to keep it the 3.25” pouch loops together. Very happy with the result!

So even though there is no issue with using that mason line (so far!), why not make that loop connection in the center of the pouch even stronger??

To make a more strongly connected pouch, simply replace the mason line common whipping with 550 paracord and tie the 3.25” loops together with west country whipping. All dimensions in the above tutorial remain the same.

Pics show the west country whipped pounch

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Another pic

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One more

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That ended up looking really good.  Nice job! :thumb:

I wasn't a fan of the masking tape.  With tennis balls, probably not too much of a problem.  But my concern with anything heavier is it would give out at some point without warning.  Duct tape I think would be much better.  I think you would see it wearing out and could replace it before a total failure.  Gorilla tape would likely do the job well too.

But the cordage wrap, that looks great.

The masking tape was just temporary to hold the loops together so I could tie the whipping. But very good point about using a strong tape. Gorilla tape is 2 to 3 times stronger than duct tape…that would be a smarter choice for durability.

TIL - quick google search and found “Gorilla Ultimate Tape”   This is 5 times stronger than the original gorilla tape!  Did not know this exists. This ultimate tape is then 10 to 15 times stronger than duct tape. Clearly this is the tape to use!!

Heres what i came up with.
I took each loop and twisted it 180° so it creates a figure eight. attaching the two figure eight heads together like the twin loop and then compressing the figure eight so where the two cords cross is turned into another double strand warp for the weave. I took the black cord and wove that between the two stranded red warp, the red and yellow warp, and then the yellow-yellow. The two loose ends on either side were then joined with a brummel lock and tapered from two strands @full thickness to 1 gutted cord on the release and to a full cord on the retention.

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Please help me resize this Joe or someone haha

Try not sending the original photo, but only a screenshot from the screen, it will be just the right size.

A.  The spliced loops look so much better than tying knots! No weight and so smooth!  Great job!! Splicing is the way to go if you know how to do that. On my next one I make I am changing from the figure 8 follow thru knot to the perfection loop knot just to make the knots lighter and also to center the loops on the release/retention lines.  Still won’t look as nice as your splices but might look better than what I was doing.


B.  The woven center has to be stronger than whipping. Thats a definite improvement. Really I think your pouch may be indestructible….so that overcomes the design flaw the pouch could separate into two loops on any given throw due to the whipping failing.



C.  The discussion so far suggests the weight added to the center of the pouch is beneficial. So any idea of the weight of your center?  My WCW whipping is about 30” of paracord (0.6 grams). You added extra paracord (10”-12”???) by “figure eighting” the loops PLUS you added the black cord for the weave. There is more material for sure but I don’t know if there is more weight.


D. I guess the other difference is the size of your pouch. Your pouch has a much larger contact patch. No idea if this is better or not. But it is different.  Your pouch does look cosmetically so much nicer for sure! I was thinking eliminate the WCW whipping and stack ranger beads instead…..beads would be more uniform but would still stick out a bunch from the tennis ball surface.  Your pouch fits nicely to the tennis ball and has such a smooth, lower profile.  So despite being “larger”, aerodynamically your pouch is way better to spin…much less drag from that lower profile.



Be very curious on how it throws.

Beautiful version of the design swiftcreek! :thumb:

It's really cool seeing the evolution of this sling.

Inspiration from Swiftcreek led to my latest Twin Loop sling I built.

First, as Swiftcreak did, using more than one color looks much nicer!

Second, although I don’t splice (yet), I did switch to perfection loop knots so the release/retention cords are centered and coming straight out of the knots like Swiftcreek’s sling. Akso, looks much nicer!


I am playing around with learning cobra weave to replace the west county whipping. So far I learned if you don’t get those cobra knots tight they don’t bind the Twin Loops very well at all!! I see potential but don’t trust my quality with the cobra weave just yet.

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