# Duncan BK / RC mods **URL:** \ **Category:** Spin Tops\ **Created:** [August 26, 2011, 3:16am UTC](https://forums.yoyoexpert.com/t/duncan-bk-rc-mods/29381 "2011-08-26T03:16:36Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Neff](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/neff/32/359_2.png) [@Neff](https://forums.yoyoexpert.com/u/Neff)\ **Post date:** [August 26, 2011, 3:16am UTC](https://forums.yoyoexpert.com/t/duncan-bk-rc-mods/29381/1 "2011-08-26T03:16:36Z")
So I’ve been hacking away at some of my Duncan Bearing King / Rip Cord parts: ![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/8/8/0/880ee96dfbe08570643b49c86d2a913ef5d4c076.jpeg) ![](https://us1.discourse-cdn.com/flex015/uploads/yoyoexpert1/original/4X/7/1/2/712308662ae369a209102a631b018774304018be.jpeg) ---
**Author:** ![phrawg2001](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/phrawg2001/32/785_2.png) [@phrawg2001](https://forums.yoyoexpert.com/u/phrawg2001)\ **Post date:** [August 26, 2011, 3:41am UTC](https://forums.yoyoexpert.com/t/duncan-bk-rc-mods/29381/2 "2011-08-26T03:41:03Z")
is that a metal tip on the blue one? Spintastics tip? How did you remove the top part? Lathe or grinder? PS. Love the one you modded for me 🙂 ---
**Author:** ![Neff](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/neff/32/359_2.png) [@Neff](https://forums.yoyoexpert.com/u/Neff)\ **Post date:** [August 26, 2011, 5:05am UTC](https://forums.yoyoexpert.com/t/duncan-bk-rc-mods/29381/3 "2011-08-26T05:05:54Z")
The metal tip on the blue top was made by [Russ Andert](http://yoyowiki.org/wiki/Russell_Andert_The_Dert). He made some (like 20?) a few years ago, I’m lucky enough to own one ;D It is basically an exact copy of the plastic tip (bearing) and it works pretty good. All the re-shaping was done on my lathe. I didn’t think I could get a descent finish after cutting the polycarb, but after I saw some of Eric Wolff’s work at Worlds I gots inspired. I’m not the cleanest modder, so the finish isn’t glossy or anything but plenty good enough for me. ---
**Author:** ![anonyo](https://avatars.discourse-cdn.com/v4/letter/a/8baadc/32.png) [@anonyo](https://forums.yoyoexpert.com/u/anonyo)\ **Post date:** [August 29, 2011, 2:01pm UTC](https://forums.yoyoexpert.com/t/duncan-bk-rc-mods/29381/4 "2011-08-29T14:01:08Z")
you are fraeking awsome