# Butterfly AL Caps **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [January 19, 2024, 12:45am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377 "2024-01-19T00:45:40Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Errant.Giraffe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/errant.giraffe/32/283519_2.png) [@Errant.Giraffe](https://forums.yoyoexpert.com/u/Errant.Giraffe)\ **Post date:** [January 19, 2024, 12:45am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/1 "2024-01-19T00:45:40Z")
Hey hey, I’m just wondering if anyone has removed the caps from a Butterfly AL (not the delrin one). I really love how mine feels, but I just wonder how it would play with a couple grams off the sides. Is this a suction cup situation? ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 12:46am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/2 "2024-01-19T00:46:31Z")
Use an air pump. Wear earplugs. ---
**Author:** ![Errant.Giraffe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/errant.giraffe/32/283519_2.png) [@Errant.Giraffe](https://forums.yoyoexpert.com/u/Errant.Giraffe)\ **Post date:** [January 19, 2024, 12:48am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/3 "2024-01-19T00:48:08Z")
Haha, yeah? Like a bicycle pump pressed against the inside hub? Is it permanent, or can I snap them back in if I hate it? 😁 ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 12:50am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/4 "2024-01-19T00:50:44Z")
Bike pump is fine. Remove axle and bearing then stick valve into hole and pump. It’ll pop out. Might have to put tape around for a seal. You can replace them. ---
**Author:** ![bheinz63](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bheinz63/32/137310_2.png) [@bheinz63](https://forums.yoyoexpert.com/u/bheinz63)\ **Post date:** [January 19, 2024, 12:56am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/5 "2024-01-19T00:56:36Z")
is the OG butterfly al axle hole tapped through, or is it solid at the base? I havent had one in so long i dont remember ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 12:57am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/6 "2024-01-19T00:57:13Z")
Actually I may be thinking of a different yoyo. There are so many butterfly/freehand variations now I get mixed up. I cannot confirm the air pump method will work on the all metal Butterfly AL, but it definitely works on other Duncan capped models. Be careful! ---
**Author:** ![TommyBwell](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/tommybwell/32/304464_2.png) [@TommyBwell](https://forums.yoyoexpert.com/u/TommyBwell)\ **Post date:** [January 19, 2024, 1:00am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/7 "2024-01-19T01:00:12Z")
Zzzz ---
**Author:** ![TryCatchThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/trycatchthrow/32/171307_2.png) [@TryCatchThrow](https://forums.yoyoexpert.com/u/TryCatchThrow)\ **Post date:** [January 19, 2024, 1:08am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/8 "2024-01-19T01:08:17Z")
The original Butterfly AL? This one? > **[Butterfly AL](https://shop.yoyoexpert.com/products/butterfly-al-yoyo-by-duncan)** > > From Duncan: The idea of transforming the Butterfly into aluminum is a pretty bold concept. The original Butterfly design is really something you don’t want to mess around with. After a lot of thought, we finally decided to design something aimed... I vote that this one’s caps are not removable. ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 1:25am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/9 "2024-01-19T01:25:51Z")
Yeah. If it’s this one then I think your right. ---
**Author:** ![Errant.Giraffe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/errant.giraffe/32/283519_2.png) [@Errant.Giraffe](https://forums.yoyoexpert.com/u/Errant.Giraffe)\ **Post date:** [January 19, 2024, 1:31am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/10 "2024-01-19T01:31:14Z")
Yeah, that one. Looks like there’s a pinhole under the axle. I’ll explore further and report back. 👨🏻‍🔬 ---
**Author:** ![bheinz63](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bheinz63/32/137310_2.png) [@bheinz63](https://forums.yoyoexpert.com/u/bheinz63)\ **Post date:** [January 19, 2024, 1:33am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/11 "2024-01-19T01:33:21Z")
The caps are almost certainly just press fit like other caps, I doubt theyre more permanent than that. I also wouldn’t be surprised to be wrong on that, so good luck! ---
**Author:** ![RobG](https://avatars.discourse-cdn.com/v4/letter/r/a698b9/32.png) [@RobG](https://forums.yoyoexpert.com/u/RobG)\ **Post date:** [January 19, 2024, 1:57am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/12 "2024-01-19T01:57:55Z")
I know these aren’t what you’re asking about but I prefer how all 3 play without the caps… And I also happen to think they look better without the caps too Butterfly AL 2023, small bearing Freehand, small bearing Freehand mini ![PXL_20240119_015001906](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/4/5/3/45341c2fad61be7990f124f95d6667a8f62d5243.jpeg) ---
**Author:** ![Captrogers](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captrogers/32/647012_2.png) [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)\ **Post date:** [January 19, 2024, 2:14am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/13 "2024-01-19T02:14:19Z")
I have one and never tried. I can fiddle with it tomorrow a bit. ---
**Author:** ![TryCatchThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/trycatchthrow/32/171307_2.png) [@TryCatchThrow](https://forums.yoyoexpert.com/u/TryCatchThrow)\ **Post date:** [January 19, 2024, 2:36am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/14 "2024-01-19T02:36:09Z")
I just picked up mine. I haven’t played it in ages. It’s a real chonker. Is the goal to cut weight? ---
**Author:** ![TryCatchThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/trycatchthrow/32/171307_2.png) [@TryCatchThrow](https://forums.yoyoexpert.com/u/TryCatchThrow)\ **Post date:** [January 19, 2024, 2:40am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/15 "2024-01-19T02:40:08Z")
I have the Unknown edition which I believe has a different finish and it does not look to me like anything is removable on the half. ---
**Author:** ![Errant.Giraffe](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/errant.giraffe/32/283519_2.png) [@Errant.Giraffe](https://forums.yoyoexpert.com/u/Errant.Giraffe)\ **Post date:** [January 19, 2024, 3:25am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/16 "2024-01-19T03:25:39Z")
Goal is just to see how it plays without them. So I’m happy to report, that the caps indeed _can_ be removed. I put a presta valve adapter on my bike pump and it made a perfect seal. 2-3 pumps and BANG! The caps weigh 8 grams each, bringing it from 62g down to 46g! So yeah, it’s super light now and plays kinda weird. 😆 ![IMG_1903](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/d/c/0/dc0a4d70c6336544a8a3b540347052d59d0a698b.jpeg) ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 3:52am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/17 "2024-01-19T03:52:11Z")
Looks great!!! ---
**Author:** ![Yodaddyo](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yodaddyo/32/602050_2.png) [@Yodaddyo](https://forums.yoyoexpert.com/u/Yodaddyo)\ **Post date:** [January 19, 2024, 4:09am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/18 "2024-01-19T04:09:55Z")
Nice! I was almost certain that would NOT work. I’m glad I was wrong. I wonder if some weight rings or maybe even some plastic butterfly caps would give you more of the weight you’re looking for ---
**Author:** ![Captrogers](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/captrogers/32/647012_2.png) [@Captrogers](https://forums.yoyoexpert.com/u/Captrogers)\ **Post date:** [January 19, 2024, 4:17am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/19 "2024-01-19T04:17:31Z")
Interesting. I wonder if those are standard Duncan cap size. If so could add weight rings or caps that are half the original weight and tune it to preference. If time allows I might do this with mine. ---
**Author:** ![TheThrowingGnome](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/thethrowinggnome/32/14231_2.png) [@TheThrowingGnome](https://forums.yoyoexpert.com/u/TheThrowingGnome)\ **Post date:** [January 19, 2024, 4:20am UTC](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377/20 "2024-01-19T04:20:34Z")
Or better yet 3D print some cool custom caps. [Next page](https://forums.yoyoexpert.com/t/butterfly-al-caps/392377.md?page=2)