Hot Wheels Track Joiner Remix

thingiverse

The original design was a solid fit. However it had some wiggle room and I found the concave spot in the button made it harder to use effectively. So I slightly enlarged the size of the button and removed the concavity, now it functions perfectly for my purposes. I also added a no-button version, which may not hold up as well but is easier to operate, especially for younger kids who find the button version perplexing. I based this variation on the model from Malamaker.