# PIF - Sickburn Ultem Yo-Yo **URL:** \ **Category:** Buy / Sell / Trade\ **Created:** [August 6, 2025, 2:00am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722 "2025-08-06T02:00:53Z")\ **Posts on this page:** 20\ **Page:** 6
**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:** [October 4, 2025, 2:30pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/101 "2025-10-04T14:30:26Z")
I like to tinker! ---
**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:** [October 4, 2025, 2:55pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/102 "2025-10-04T14:55:01Z")
@rkalajian we have located our first mad scientist. ---
**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:** [October 4, 2025, 3:35pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/103 "2025-10-04T15:35:23Z")
I’ll be able to move this one along on Monday. Can you tell me who is next please? ---
**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:** [October 4, 2025, 4:44pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/104 "2025-10-04T16:44:09Z")
I think it’s me! ---
**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:** [October 4, 2025, 5:03pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/105 "2025-10-04T17:03:34Z")
You are next. But also next for tinkering. If you are okay with posting both to different folks when you are done then that’s fine. ---
**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:** [October 4, 2025, 10:08pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/106 "2025-10-04T22:08:04Z")
I like to tinker as well but my house is under construction so might not get to. I do have many spare stems to toss in it. ---
**Author:** ![cowmamba](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/cowmamba/32/270859_2.png) [@cowmamba](https://forums.yoyoexpert.com/u/cowmamba)\ **Post date:** [October 5, 2025, 4:40am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/107 "2025-10-05T04:40:23Z")
Definitely would like to give it a go if there’s any openings. ---
**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:** [October 5, 2025, 5:49am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/108 "2025-10-05T05:49:44Z")
There should be openings as long as people want to sign up. In November when the new version is in my hands I’ll be replacing these protos with that one. ---
**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:** [October 29, 2025, 2:44pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/109 "2025-10-29T14:44:38Z")
Ready to pass the PIF along to the next participant. I think it’s @Lydia who is next. Send me a PM if you still want to try it. my thoughts on the V1 is: - Like feel of the material - Like the look of the material - Responds just right with the thick lube, but a tighter gap and/or more aggressive response will be nice - Would personally like a bit higher walls. - Looking forward to the V2 run. ---
**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\ **Post date:** [November 11, 2025, 2:59am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/110 "2025-11-11T02:59:45Z")
HOLY CRAP YOU MADE AN ULTEM YO-YO!? I have a titanium and ultem yo-yo pen and it’s one of my very favorites! This is a GREAT material to work with! > **[Polyetherimide](https://en.wikipedia.org/wiki/Polyetherimide)** > > Polyetherimide (PEI; branded as Ultem) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range. > PEI plastics were first introduced into the market by General Electric (GE) in 1982 under the trade name Ultem resulting from the work of J.G. Wirth's research team in the early 1970s. > Due to its adhesive properties and chemical stabilit... VERY VERY much looking forward to v2. Please reserve one for me. I’ll pay extra. update: here’s the Ultem/titanium pen that is my EDC. LOVE this thing. I only gave it to two other people: Jimmy Wales of wikipedia and Alexander Vindman (ex us-military of note, think Ukraine). ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/5/0/4/504511473b11a9bea501f9f28457bd4fde361980.jpeg) ---
**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:** [November 11, 2025, 3:26am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/111 "2025-11-11T03:26:46Z")
Yep! I have also been making some other Ultem yoyo accessories! Including 3/4 spec Ultem bearing blanks that turn the deepest state and other side effect bases yo-yos into fixed axles. ![IMG_0846](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/7/1/b/71b10cd799bb42eaa189d42a298bd90670b3e404.jpeg) ![IMG_0847](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/1/a/0/1a0595ad5e881c4078d6fc1526e40dd857a3f9a2.jpeg) Most of the accessories are now up for sale on my site other than the Ultem No Jive axles which need a little more love. I’m selling the accessories at my cost to give back to the yoyo community. For the v2 there has been much drama with the shop making the v2, they ruined 97 out of the 100 Yoyo run and are currently remaking them all. I’ll post an update [in the main thread](https://forums.yoyoexpert.com/t/sickburn-yo-yo-workshop-ultem-fixie/430149/372) when I get them up for sale! ---
**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\ **Post date:** [November 11, 2025, 3:47am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/112 "2025-11-11T03:47:27Z")
well if you need help funding it you know how to reach me :wink: ---
**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:** [November 11, 2025, 4:22am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/113 "2025-11-11T04:22:37Z")
Now I want to know who made that pen cause it looks fantastic. Not to stray off topic further ---
**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:** [November 11, 2025, 4:47am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/114 "2025-11-11T04:47:50Z")
That looks like a Tactile Turn. I’ve been eyeing them considering buying one to go with the yoyo but hadn’t pulled the trigger yet. ---
**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\ **Post date:** [November 11, 2025, 7:21am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/115 "2025-11-11T07:21:32Z")
It’s some guy in China who sells them on eBay. ---
**Author:** ![Lydia](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/lydia/32/623815_2.png) [@Lydia](https://forums.yoyoexpert.com/u/Lydia)\ **Post date:** [November 17, 2025, 3:51pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/116 "2025-11-17T15:51:14Z")
I’m ready to move this bad boy on! I think @MinerJ is next. DM me your address! My thoughts: I love how it seems to change color in the sunlight. It reminds me of prehistoric amber, so my name suggestion is “Electrum”, which is the Greek name for amber. I would like a slightly smaller gap on this to give it a more snappy response, maybe higher walls also as it tends to want to fall out of stalls. The ThrowYo Serum in Medium was my favorite string on it I’m excited to see how this project turns out! ---
**Author:** ![codinghorror](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/codinghorror/32/8052_2.png) [@codinghorror](https://forums.yoyoexpert.com/u/codinghorror)\ **Post date:** [November 17, 2025, 10:35pm UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/117 "2025-11-17T22:35:57Z")
Ultem is a very, very kick-butt material. ---
**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:** [November 18, 2025, 12:09am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/118 "2025-11-18T00:09:49Z")
Tell that to the pervious machine shop ![image](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/a/4/b/a4b5a150e822878ee422e58958af014fe7d1cb7c.gif) ---
**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:** [November 18, 2025, 12:40am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/119 "2025-11-18T00:40:20Z")
I’m pretty sure that shop ripped me off in more ways than one. Just discovered dropping the misshapen poorly machined yo-yos gently onto carpet snaps them. :joy: I have to laugh about it to retain some sanity. It’s like… cheap 3d printed resin durability. I think they tried to counterfeit Ultem. The original prototypes were insanely durable. I’m still trying to get my money back from them to pay for a run from my new trustworthy and competent machine shop. ---
**Author:** ![Upmanyu](https://avatars.discourse-cdn.com/v4/letter/u/e68b1a/32.png) [@Upmanyu](https://forums.yoyoexpert.com/u/Upmanyu)\ **Post date:** [November 18, 2025, 12:49am UTC](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722/120 "2025-11-18T00:49:54Z")
Aw man it was too good to be true!! Hope you get your money back and dont let em talk you into another run of garbage! [Previous page](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722.md?page=5) [Next page](https://forums.yoyoexpert.com/t/pif-sickburn-ultem-yo-yo/430722.md?page=7)