# wand extension mechanism **URL:** \ **Category:** Proton Packs\ **Created:** [March 27, 2023, 2:45am UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228 "2023-03-27T02:45:49Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![prestonkay](https://forum.gbfans.com/letter_avatar_proxy/v4/letter/p/ea5d25/32.png) [@prestonkay](https://forum.gbfans.com/u/prestonkay)\ **Post date:** [March 27, 2023, 2:45am UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/1 "2023-03-27T02:45:49Z")
How do i get the gun barrel part of the [neutrino wand](https://www.gbfans.com/shop/mattel-neutrino-wand) to extend like in the films? Servos or a spring? What do i keed and how would i do it? ---
**Author:** ![trekgod3](https://forum.gbfans.com/letter_avatar_proxy/v4/letter/t/ecc23a/32.png) [@trekgod3](https://forum.gbfans.com/u/trekgod3)\ **Post date:** [March 28, 2023, 7:41pm UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/2 "2023-03-28T19:41:49Z")
Need a little more info to go on. What wand are you talking about? The Hasbro wand? The [Mattel](https://www.gbfans.com/wiki/toys/mattel) ? A 3d printed one? One your planing on building from scratch? ---
**Author:** ![prestonkay](https://forum.gbfans.com/letter_avatar_proxy/v4/letter/p/ea5d25/32.png) [@prestonkay](https://forum.gbfans.com/u/prestonkay)\ **Post date:** [March 28, 2023, 9:35pm UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/3 "2023-03-28T21:35:06Z")
scratch built wand. i cant figure out the pop mechanisim for the barrel ---
**Author:** ![jonogunn](https://forum.gbfans.com/user_avatar/forum.gbfans.com/jonogunn/32/186058_2.png) [@jonogunn](https://forum.gbfans.com/u/jonogunn)\ **Post date:** [March 29, 2023, 5:59am UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/4 "2023-03-29T05:59:57Z")
Guessing you’re not 3D printing it but maybe you can use Tacobelli’s 3D print pop mech as reference [https://www.thingiverse.com/thing:4770700](https://www.thingiverse.com/thing:4770700) ---
**Author:** ![kingpin](https://forum.gbfans.com/user_avatar/forum.gbfans.com/kingpin/32/187259_2.png) [@kingpin](https://forum.gbfans.com/u/kingpin)\ **Post date:** [March 31, 2023, 8:43pm UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/5 "2023-03-31T20:43:11Z")
> [@prestonkay post\_id=4980549 time=1679885149 user\_id=48423](#): > > How do i get the gun barrel part of the neutrino wand to extend like in the films? Servos or a spring? What do i keed and how would i do it? In the first film it was a fairly simple spring-release mechanism, I’m not sure what they used for _[Afterlife](https://www.gbfans.com/shop/ghostbusters-afterlife)_. Some people have replicated this, while others have gone for more elaborate designs, like the one jonogunn has linked to. ---
**Author:** ![tobycj](https://forum.gbfans.com/user_avatar/forum.gbfans.com/tobycj/32/186876_2.png) [@tobycj](https://forum.gbfans.com/u/tobycj)\ **Post date:** [April 2, 2023, 8:50am UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/6 "2023-04-02T08:50:25Z")
> [@Kingpin post\_id=4980774 time=1680295391 user\_id=76](#): > > > [@prestonkay post\_id=4980549 time=1679885149 user\_id=48423](#): > > > > How do i get the gun barrel part of the neutrino wand to extend like in the films? Servos or a spring? What do i keed and how would i do it? > > In the first film it was a fairly simple spring-release mechanism, I’m not sure what they used for _Afterlife_. Some people have replicated this, while others have gone for more elaborate designs, like the one jonogunn has linked to. I’d assume a Freekygeeky made them they used his mechanism? ---
**Author:** ![Pseudodonn7](https://forum.gbfans.com/letter_avatar_proxy/v4/letter/p/7ea924/32.png) [@Pseudodonn7](https://forum.gbfans.com/u/Pseudodonn7)\ **Post date:** [April 16, 2023, 1:17am UTC](https://forum.gbfans.com/t/wand-extension-mechanism/4228/7 "2023-04-16T01:17:52Z")
I bought a Nickatron pack back in 2009. The mechanism in that wand is a simple manual pully system. Push down, extends, push up retracts. I’ve been trying to replicate it but to no avail. I refuse to dismantle the old pack completely to figure out how it is rigged. But here is the jist from just what I know. It won’t extend as much as the pop spring method but it can retrieve the barrel back into slot instead of having to push it back from the barrel at the top, as I’ve seen some pop spring mechanisms. Obviously I prefer this one. Not saying it’s superior, it’s just my personal preference. Even if it’s not film accurate, it’s still practical in my opinion. ![image](https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/2fce3eea-a9c2-494c-81c5-7c0da7316216/dfujb37-06370689-90d1-4124-878a-6bc53a3c5f99.jpg/v1/fill/w_1032,h_774,q_70,strp/b6c81de4_a2e4_4a49_aab6_0a2d06b9b3ac_by_pseudodonn7_dfujb37-pre.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7ImhlaWdodCI6Ijw9OTYwIiwicGF0aCI6IlwvZlwvMmZjZTNlZWEtYTljMi00OTRjLTgxYzUtN2MwZGE3MzE2MjE2XC9kZnVqYjM3LTA2MzcwNjg5LTkwZDEtNDEyNC04NzhhLTZiYzUzYTNjNWY5OS5qcGciLCJ3aWR0aCI6Ijw9MTI4MCJ9XV0sImF1ZCI6WyJ1cm46c2VydmljZTppbWFnZS5vcGVyYXRpb25zIl19.z0QRKOyXyg8YQQHh06RkKQxqouBGhZUw9xtOTkIT1Ts) ![image](https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/f/2fce3eea-a9c2-494c-81c5-7c0da7316216/dfujb3j-ba2eb76b-347e-4daf-ac03-4d204c165d6e.jpg/v1/fill/w_1032,h_774,q_70,strp/40f98c69_fee4_4273_b577_d1f6a189769f_by_pseudodonn7_dfujb3j-pre.jpg?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ1cm46YXBwOjdlMGQxODg5ODIyNjQzNzNhNWYwZDQxNWVhMGQyNmUwIiwiaXNzIjoidXJuOmFwcDo3ZTBkMTg4OTgyMjY0MzczYTVmMGQ0MTVlYTBkMjZlMCIsIm9iaiI6W1t7ImhlaWdodCI6Ijw9OTYwIiwicGF0aCI6IlwvZlwvMmZjZTNlZWEtYTljMi00OTRjLTgxYzUtN2MwZGE3MzE2MjE2XC9kZnVqYjNqLWJhMmViNzZiLTM0N2UtNGRhZi1hYzAzLTRkMjA0YzE2NWQ2ZS5qcGciLCJ3aWR0aCI6Ijw9MTI4MCJ9XV0sImF1ZCI6WyJ1cm46c2VydmljZTppbWFnZS5vcGVyYXRpb25zIl19.NeB9ebPMpyvd0MLP3puG3VXHw2IUwEUbGvHZHrJDqFA) It won’t extend as much as the pop spring method but it can retrieve the barrel back into slot instead of having to push it back from the barrel at the top, as I’ve seen some pop spring mechanisms. Obviously I prefer this one. Not saying it’s superior, it’s just my personal preference. Even if it’s not film accurate, it’s still practical in my opinion. I haven’t completely gotten it to work yet, but the theory is sound. I just need to figure out a way to rig it to the acrylic rod, and I’m in business. I still need to figure out length of the rod, and other things as well, but so far so good… it looks like the old pack’s original mechanism. I made a… I guess a tri-coupler? (black triangle thingy) which fits the wire perfectly. It could bump the base of the wand a bit, and I still am unsure how it’ll work with the electronics.. but baby steps.