Introduction: Buzzsaw TR-4 Final Prototype

Picture of Buzzsaw TR-4 Final Prototype

Buzzsaw, a concept simply built to show a simple concept never tried before. I really enjoyed how this turned out and I know a lot of my fellow knexers liked how it turned out too. This gun just happens to be a rare combination of concept with visual appearance. I will admit for anyone planning to build this gun that this isn't exactly a perfected gun. I still had a couple problems with this gun but that's why I'm posting it, with your help Buzzsaw will be a great gun to use and will be the most unique and effective turret out there. So let's get building Buzzsaw!!

Step 1: The Body and Internals

Picture of The Body and Internals

I took a lot as pictures as normal of the entire gun. If you need explanation on how something goes together just leave a comment on this ible' and I'll be glad to help you out.

Step 2: Turret

Picture of Turret

Okay, now for this part there is some things I should mention. First is that you will need two cut rod (three connector length). Second is that you will need two rubberbands, electrical tape, and some scissors. When you get to the step of applying the rubberbands, be sure the bands are as flat as possible. If they are twisted they will cause extra friction on the turret which will cause it not to spin correctly. Also be sure to apply the electrical tape as shown. Do so by cutting the electrical tape in half and threading it through the hole in the green connector and then loop it around a couple of times. Overall, just ensure that the turret halves are secured together why not obstructing the path of the projectile.

Step 3: Finished

Picture of Finished

I hope you enjoy your Buzzsaw!

For firing cock the firing pin and rotate your turret in the direction I'm pointing in picture 2. Next, hang on to the turret, load at least one blue rod into one of the chambers (you may need to use another rod to do so). Also when loading make sure the blue rod is positioned where it won't obstruct the other chambers or else it will jam. Next let go of the turret, if it isn't in the right position it should rotate to where you loaded you ammo, if not, give it a little spin with your hand to get it going. If it doesn't spin, it should already be at the chamber with ammo in it. If not, something is wrong, try resetting the turret and trying again.
The turret may spin rapidly and pass your ammo or I call it "free spinning" (semi common problem with mine) if so slow your turret rotation with your hand when it starts "free spinning" 

I still think this is one of my best looking guns that have produced so far. Please feel free to modify and make it better because there is a lot of potential in this concept and you can bring it out!

Thanks for checking it out!



Linkin_J_Knex (author)2015-12-16

Oh.My.God. that turret looks AMAZING

Kona-chan (author)2014-03-14


as promised

is it now meelee capable



arm guard

rail thingy




JonnyBGood (author)Kona-chan2014-03-14

Nice! do you have a picture?

Kona-chan (author)JonnyBGood2014-03-15

not at the moment sorry

got beated up with kick boxing xD

JonnyBGood (author)Kona-chan2014-03-15

Ah I see.... XD.

Very good job, old chap. It looks great! I can't promise to make it, but I will definitely consider doing so.

lol old chap

Sorry. =S I read (and listen to) a lot of old English books, so saying "old chap" has become akin to saying "bro" or "dude." It is more of a "term of friendship" (if that doesn't sound to weird, actually, it kinda does. Ignore me) than anything else.

dont be sorry I just thought it's a funny phrase to use. and not in a bad way

O.K., cool. =D

Well as long as you build Zip3 you won't need to build this. Although if you really want to give it a "spin" feel free! XD

XD, see what you did there.

Yay! Pun! =P

Kona-chan (author)2014-03-11

as promised, now the instructions are here,

I will try to make a meelee weapon out of it,

but not tomorrow, funaral...

but i think sunday the pics might be up

JonnyBGood (author)Kona-chan2014-03-11

well sorry for the funeral... you don't need to make it if you don't want to. I know life can get busy.

Kona-chan (author)JonnyBGood2014-03-14

thx man, but nah, imma never busy, and if i am, i'll always make time

and ey, i promised, gonna build it right away

JonnyBGood (author)2014-03-13

Kinda like a futuristic tommy gun? Thats what image is coming to mind.

akshat21045 made it! (author)2014-03-12

Here is my Buzzsaw!! I have added a removable mag mod, but that does not affect its working by any manner. Feel free to use the mod!

JonnyBGood (author)akshat210452014-03-13

Very Awesome! I'm guessing yours worked really well then!

akshat21045 (author)JonnyBGood2014-03-13

It works quite well indeed! With the cut on the reload time, it works better than the original Zip! I could do a review if you wanted...


JonnyBGood (author)akshat210452014-03-13

Be my guest! I'm glad your version worked really well. Mine gave me a fight to the end.

akshat21045 (author)2014-03-10

1st View+ 1st comment! I am going to make it soon!

JonnyBGood (author)akshat210452014-03-11

Glad I could get it posted for you!

akshat21045 (author)JonnyBGood2014-03-12

I made it (Yay!), and I will get pics up in a few hours (bit busy now) and also, I made a modification to it by enabling it to use removable mags! It is awesomer than ever now!

JonnyBGood (author)akshat210452014-03-12

Whoa. ... I'm stunned! You built this with removable mags? I'm very interested in what this looked like.

akshat21045 (author)JonnyBGood2014-03-12

BTW, if you want the mod, I'll be happy to share it! It's quite easy too!

pongopeter826 (author)2014-03-11

Great you posted it I'm going to build it tomorrow but quick question do you need the electric tape or can I use masking?

JonnyBGood (author)pongopeter8262014-03-12

Whatever one you want I used electrical tape just because I had it handy and you can wrap it really tight just make sure the turret spins okay.

Guess masking might work, just make sure it is a bit smooth, so it does not increase friction and stop the mag from rotating...

JonnyBGood (author)2014-03-12


nerfrocketeer (author)2014-03-11

Nice man! Looks very professional and I like dat compact design! :P Good job bro!

JonnyBGood (author)nerfrocketeer2014-03-11


nerfrocketeer (author)JonnyBGood2014-03-12


hunter999 (author)2014-03-11

Very, very neat. The appearance of it looks awesome! Good job :D

JonnyBGood (author)hunter9992014-03-11

Thank you!

sandroknexmaster (author)2014-03-11

This looks cool!

Thanks as always =D

About This Instructable




Bio: Hello. I'm JonnyBGood! I'm a college student who now has a degree in Mechanical Engineer Technology. (MET) (excessively worded to mean a person ... More »
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