/r/ K'nex: For sharing anything K'nex Related!

A place for enthusiasts to share ideas and personal projects with K'nex!

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Giant Dive Coaster Construction

Posted 24th Apr 2026u/CoasterWriter

TIL you can iron Knex !!!

Posted 23rd Apr 2026u/Dirkvs_79

Anyone in the Phoenix area want these for cheap?

Posted 22nd Apr 2026u/FUNwithaCH

How should I organize my room to fit my around the room ball machine?

Posted 21st Apr 2026u/KnexXHyperX

Hey all, I’m not an expert on anything KNEX, need help finding the set a piece goes to.

Posted 13th Apr 2026u/NinjaWarrior511

A helicopter I built for my son. But I kinda don’t like the front because it is open and a bit wobbly.

Posted 13th Apr 2026u/AppropriateAd7326

Ideas for what next ??

Posted 7th Apr 2026u/Dirkvs_79

Posted 6th Apr 2026u/AwesomeAvocado

Charlie upgraded his cube

Posted 6th Apr 2026u/fallingupward-

honey why the [__] are you adding hyperbolic space to k’nex

Posted 4th Apr 2026u/Head-Radish-1661

spike ball :DDDDDDD

Posted 4th Apr 2026u/Head-Radish-1661

why does the normal version of this special peice (i don’t kmow the name) dangles with itself but mini doesn’t

Posted 4th Apr 2026u/Head-Radish-1661

Huge ferris wheel

Posted 3rd Apr 2026u/Organic_Smile_8731

i have an idea, what if we sold k’nex toys (mini+normal) in each individual colours like white pack like £5 for both £3 for normal and £2 for mini or that’s an thing

Posted 4th Apr 2026u/Head-Radish-1661

Good news! I took another look at the set, and with some improvisation using the leftover pieces I managed to finish it. Here it is:

Posted 2nd Apr 2026u/ShoulderCorrect1662

Two recent practical knex uses

Posted 2nd Apr 2026u/Witty-Fisherman-648

i found a knex set left outside, built it, but it is missing some pieces, what can i do now?

Posted 30th Mar 2026u/ShoulderCorrect1662

Posted 28th Mar 2026u/mcdoc2983

Gears, and mass

Posted 27th Mar 2026u/No_Repeat7030

The Wheel of Fortune

Posted 26th Mar 2026u/KourtGamingShow

Dual speed reversible motor that goes to what exactly?

Posted 26th Mar 2026u/Relative_Plum_7124

Record Breaking K’NEX Coasters

Posted 24th Mar 2026u/CoasterWriter

Micro vs Classic K'nex

Posted 19th Mar 2026u/DenserCow

K’nex Himalaya

Posted 18th Mar 2026u/Mmhhotworter

Might be the rarest knex man

Posted 17th Mar 2026u/lo_gain_barnes

Me109 - knex build

Posted 15th Mar 2026u/omnipotank

Technical Park Pegasus 16 I made a while back

Posted 14th Mar 2026u/Mmhhotworter

Sealed sets and K'nex Collectors Items

Posted 13th Mar 2026u/OkPie3305

I just built the world's tallest K'nex Coaster Lifthill!

Posted 12th Mar 2026u/CoasterWriter

Looking for instructions!

Posted 6th Mar 2026u/OkPie3305

Not a cube, but she's still a beauty

Posted 5th Mar 2026u/Sneaky1000

Black Tee Piece

Posted 4th Mar 2026u/ElMagicovalle956

The quantum flex cube

Posted 2nd Mar 2026u/LostMagician9612

The almost cube

Posted 2nd Mar 2026u/YiraVarga

Posted 2nd Mar 2026u/Mmhhotworter

K'NEX Pulley Power!

Posted 2nd Mar 2026u/HamKnexPal

Tossin in our cube…

Posted 2nd Mar 2026u/fallingupward-

A second tiny contribution

Posted 1st Mar 2026u/tiberiusgv

A Tiny Contribution

Posted 1st Mar 2026u/YiraVarga

I have the white London Eye set

Posted 1st Mar 2026u/YiraVarga

Classix Ball Machine parts list (32049)

Posted 1st Mar 2026u/LostMagician9612

The smallest possible Knex cube

Posted 1st Mar 2026u/AppropriateAd7326

Showing 42 posts out of a possible 50.
8 posts hidden as gallery mode enabled.