# how do you take the caps off the yyf severe(derlin) **URL:** \ **Category:** Yo-Yo Mods and Maintenance\ **Created:** [February 25, 2013, 10:58pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040 "2013-02-25T22:58:34Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![augmentedloyalty](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/augmentedloyalty/32/1218_2.png) [@augmentedloyalty](https://forums.yoyoexpert.com/u/augmentedloyalty)\ **Post date:** [February 25, 2013, 10:58pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/1 "2013-02-25T22:58:34Z")
read topic ---
**Author:** ![Bcmaddog](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bcmaddog/32/1170_2.png) [@Bcmaddog](https://forums.yoyoexpert.com/u/Bcmaddog)\ **Post date:** [February 26, 2013, 2:35am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/2 "2013-02-26T02:35:40Z")
Use a piece if duct tape and let it sit on the cap for a few minutes then pull. Or use a suction cup to pull it off. ---
**Author:** ![yuki\_onitsura](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yuki_onitsura/32/1162_2.png) [@yuki\_onitsura](https://forums.yoyoexpert.com/u/yuki_onitsura)\ **Post date:** [February 26, 2013, 2:37am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/3 "2013-02-26T02:37:46Z")
Suction cup works a treat. Yuki ---
**Author:** ![Bcmaddog](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bcmaddog/32/1170_2.png) [@Bcmaddog](https://forums.yoyoexpert.com/u/Bcmaddog)\ **Post date:** [February 26, 2013, 9:36pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/4 "2013-02-26T21:36:34Z")
> [@yuki\_onitsura](#): > > Suction cup works a treat. > > Yuki They do, sometimes they are harder to get off, that’s when duct tape comes in handy :). I have also heard the severe caps are harder than usual to take off. Correct me if I’m wrong ;). ---
**Author:** ![augmentedloyalty](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/augmentedloyalty/32/1218_2.png) [@augmentedloyalty](https://forums.yoyoexpert.com/u/augmentedloyalty)\ **Post date:** [March 9, 2013, 1:48pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/5 "2013-03-09T13:48:26Z")
> [@Bcmaddog](#): > > > [@yuki\_onitsura](#): > > > > Suction cup works a treat. > > > > Yuki > > They do, sometimes they are harder to get off, that’s when duct tape comes in handy :). I have also heard the severe caps are harder than usual to take off. Correct me if I’m wrong ;). I got them of but I had to destroy the caps. ---
**Author:** ![yuki\_onitsura](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yuki_onitsura/32/1162_2.png) [@yuki\_onitsura](https://forums.yoyoexpert.com/u/yuki_onitsura)\ **Post date:** [March 9, 2013, 1:52pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/6 "2013-03-09T13:52:24Z")
I use a slightly larger suction cap. Takes up almost the entire surface of the side cap. Yuki ---
**Author:** ![England1414](https://avatars.discourse-cdn.com/v4/letter/e/57b2e6/32.png) [@England1414](https://forums.yoyoexpert.com/u/England1414)\ **Post date:** [March 10, 2013, 3:14am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/7 "2013-03-10T03:14:58Z")
- Del-rin \* ---
**Author:** ![yoyoavenger](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/yoyoavenger/32/884_2.png) [@yoyoavenger](https://forums.yoyoexpert.com/u/yoyoavenger)\ **Post date:** [March 10, 2013, 4:31am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/8 "2013-03-10T04:31:55Z")
> [@England1414](#): > > - Del-rin \* I thought it was Der-lin. ---
**Author:** ![ReverseSquiggly](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/reversesquiggly/32/529_2.png) [@ReverseSquiggly](https://forums.yoyoexpert.com/u/ReverseSquiggly)\ **Post date:** [March 10, 2013, 5:35am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/9 "2013-03-10T05:35:58Z")
> [@yoyoavenger](#): > > > [@England1414](#): > > > > - Del-rin \* > > I thought it was Der-lin. It’s delrin, although that’s actually a brand name. The generic name is polyoxymethylene. ---
**Author:** ![Bcmaddog](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/bcmaddog/32/1170_2.png) [@Bcmaddog](https://forums.yoyoexpert.com/u/Bcmaddog)\ **Post date:** [March 10, 2013, 2:01pm UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/10 "2013-03-10T14:01:16Z")
> [@yoyoavenger](#): > > > [@England1414](#): > > > > - Del-rin \* > > I thought it was Der-lin. At one point i saw you post this and I started spelling it that way until I looked at the yoyo. Del-Rin. ---
**Author:** ![Yonut](https://avatars.discourse-cdn.com/v4/letter/y/5f8ce5/32.png) [@Yonut](https://forums.yoyoexpert.com/u/Yonut)\ **Post date:** [March 13, 2013, 3:22am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/11 "2013-03-13T03:22:58Z")
> [@ReverseSquiggly](#): > > > [@yoyoavenger](#): > > > > > [@England1414](#): > > > > > > - Del-rin \* > > > > I thought it was Der-lin. > > It’s delrin, although that’s actually a brand name. The generic name is polyoxymethylene. I thought the generic name was Acetal… ---
**Author:** ![Sgt1yoyo1](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/sgt1yoyo1/32/242554_2.png) [@Sgt1yoyo1](https://forums.yoyoexpert.com/u/Sgt1yoyo1)\ **Post date:** [March 13, 2013, 3:26am UTC](https://forums.yoyoexpert.com/t/how-do-you-take-the-caps-off-the-yyf-severe-derlin/50040/12 "2013-03-13T03:26:23Z")
> [@Yonut](#): > > > [@ReverseSquiggly](#): > > > > > [@yoyoavenger](#): > > > > > > > [@England1414](#): > > > > > > > > - Del-rin \* > > > > > > I thought it was Der-lin. > > > > It’s delrin, although that’s actually a brand name. The generic name is polyoxymethylene. > > I thought the generic name was Acetal… I believe Acetal is another brand, but polyoxymethylene is the scientific name for the specific type of polymer (plastic).