# I need help to build a 2.4 kilograms yoyo **URL:** \ **Category:** General Yo-Yo\ **Created:** [March 19, 2025, 1:54am UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250 "2025-03-19T01:54:52Z")\ **Posts on this page:** 18\ **Page:** 3
**Author:** ![SlacKing](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@SlacKing](https://forums.yoyoexpert.com/u/SlacKing)\ **Post date:** [March 26, 2025, 6:44pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/42 "2025-03-26T18:44:32Z")
What material is that based on? ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [March 26, 2025, 6:44pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/43 "2025-03-26T18:44:55Z")
Tungsten ---
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [March 26, 2025, 6:46pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/44 "2025-03-26T18:46:34Z")
Take that, 1to1! ---
**Author:** ![SlacKing](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@SlacKing](https://forums.yoyoexpert.com/u/SlacKing)\ **Post date:** [March 26, 2025, 6:51pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/45 "2025-03-26T18:51:53Z")
I guess that makes sense if you think about it. Tungsten (19.25 g/cc) is ~6.75x denser than 7068 Al (2.85g/cc). While that’s a crazy difference, 2.4kg is almost 37x heavier than your average 1A yoyo. ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [March 26, 2025, 6:53pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/46 "2025-03-26T18:53:29Z")
When you lay out the math like that it make sense. ---
**Author:** ![SlacKing](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@SlacKing](https://forums.yoyoexpert.com/u/SlacKing)\ **Post date:** [March 26, 2025, 7:05pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/47 "2025-03-26T19:05:31Z")
Thanks for the thought-provoking post. I think if you could push the dia to 65mm, you might could carve out some of that center weight and make it more “playable.” Just achieving 2.4kg might be impossible for the OP though if he’s restricted to 65mmx45mm (unless, perhaps, you have some Osmium laying around @Mei_lito). ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [March 26, 2025, 7:08pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/48 "2025-03-26T19:08:51Z")
Osmium :skull: ---
**Author:** ![AudreySickburn](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/audreysickburn/32/313292_2.png) [@AudreySickburn](https://forums.yoyoexpert.com/u/AudreySickburn)\ **Post date:** [March 26, 2025, 7:35pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/49 "2025-03-26T19:35:15Z")
Osmium weight rings or bust. ---
**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:** [March 26, 2025, 9:47pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/50 "2025-03-26T21:47:11Z")
This thing would suck to machine. Just saying. Also I’m curious is a standard m3 set screw would be good enough as an axle with that much weight ---
**Author:** ![AtomicChessGuy](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/atomicchessguy/32/606394_2.png) [@AtomicChessGuy](https://forums.yoyoexpert.com/u/AtomicChessGuy)\ **Post date:** [March 26, 2025, 9:49pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/51 "2025-03-26T21:49:31Z")
> [@Captrogers](#): > > This thing would suck to machine How come? I don’t know on the axle. I made it longer than I usually do to hopefully help with the extreme weight but I don’t know if it matters. ---
**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:** [March 26, 2025, 10:05pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/52 "2025-03-26T22:05:27Z")
Tungsten is harder and brittle compared to titanium which is usually considered hard to machine compared to al or steel or even magnesium. Your tools will wear down faster. Your cutting speed has to be heavily reduced and it could chip as you cut it due to how brittle it is. ---
**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:** [March 26, 2025, 10:14pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/53 "2025-03-26T22:14:26Z")
Honestly and it has it’s downsides but a solid gold YoYo would probably be easier to make and might even be more cost effective as labor is probably still higher than material costs in this equation Regardless this imagined yoyo would not be cheap to make ---
**Author:** ![SlowThrow](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/slowthrow/32/307451_2.png) [@SlowThrow](https://forums.yoyoexpert.com/u/SlowThrow)\ **Post date:** [March 26, 2025, 11:17pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/54 "2025-03-26T23:17:23Z")
That’s like $300,000 of gold, but I suppose it could just be straight cast, and finished from there, probably wouldn’t take too much time comparatively ---
**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:** [March 26, 2025, 11:22pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/55 "2025-03-26T23:22:39Z")
I’ve severely underestimated the raw value of gold lol 2.4kg I guess is 230k in gold vs 700 in tungsten…. ---
**Author:** ![LX\_Emergency](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/lx_emergency/32/149227_2.png) [@LX\_Emergency](https://forums.yoyoexpert.com/u/LX_Emergency)\ **Post date:** [March 27, 2025, 8:35am UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/56 "2025-03-27T08:35:21Z")
Yeah gold is pricey… ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/e/2/a/e2a9d1c66510b991f63a6a40a0162ed750b0a9c0.png) ---
**Author:** ![yoyodoc](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyodoc/32/48820_2.png) [@yoyodoc](https://forums.yoyoexpert.com/u/yoyodoc)\ **Post date:** [March 27, 2025, 9:30am UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/57 "2025-03-27T09:30:21Z")
Simple, fix for that… Just recalculate the specs of the yo-yo so that it would only way one full kilo. By reducing the weight, you scale back the price to $97,156. So that could be an option🧐 Honestly… If it was me, I would just trashcan the whole project and go down the street and buy a 2.4 kg pizza. While eating the pizza, I would smile after every bite in recognition of all the money I saved by not making a 5 pound paperweight ---
**Author:** ![MinerJ](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/minerj/32/629515_2.png) [@MinerJ](https://forums.yoyoexpert.com/u/MinerJ)\ **Post date:** [March 27, 2025, 1:33pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/58 "2025-03-27T13:33:42Z")
Especially right now, as it’s basically at an all time high. Here’s a 10 year spot price chart (in USD/ Troy oz). ![AU3650nyb](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/0/d/d/0ddb3c307ddb8d7a1773bfaddacde4481b631e9a.gif) Most of the large gold mines I work for use a rolling 5-year average spot price for mine planning and cutoff grade, so they’re making a lot of money right now, even when they make mistakes and screw things up. ---
**Author:** ![SlacKing](https://avatars.discourse-cdn.com/v4/letter/s/5f8ce5/32.png) [@SlacKing](https://forums.yoyoexpert.com/u/SlacKing)\ **Post date:** [March 28, 2025, 9:38pm UTC](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250/59 "2025-03-28T21:38:22Z")
Wow, I didn’t know we had someone who actually works for a gold mine on the forum. The username makes a lot more sense now lol. [Previous page](https://forums.yoyoexpert.com/t/i-need-help-to-build-a-2-4-kilograms-yoyo/421250.md?page=2)