Adds a simple and strong attachment mechanism for [Multiboard Snap Pieces](https://www.multiboard.io/parts-library/snaps).

It introduces the [ButterLock ](https://thangs.com/designer/ralusek/3d-model/ButterLock-1109023) mechanism directly onto a Snap piece. This provides a snug fit, while also being very easy to attach and detach.

**Directions/How-to-Use**

The included Key Insert and Key Snap Housing combine to form the male side of the lock (a Multiboard Snap piece). The ButterLock Negative should then be used on the model you'd like to act as the female. The Negative has already been offset from the key by 1mm, and can therefore just be used directly as a boolean without any further offset.

In order to combine the Key Insert and the Key Snap Housing, simply push the Key Insert up through the bottom side of the Snap Housing. You will feel/hear a click, and the Insert's bottom should be flush with the Housing's. This combined pieces is then pushed into whatever space you carve out with the negative, and rotated 90 degrees for a click lock in.

**Printing**

ButterLock Key Insert is best printed lying flat on its side, as it gives the strongest print. The Key Snap Housing can be printed in the standard flat Multiboard Snap orientation. All can be printed without supports.

Multiboard ButterLock Snap

Multiboard ButterLock Key Insert.stl

ButterLock Negative (3.5mm height, 0.15mm Offset).step

ButterLock Negative (3.5mm height, 0.15mm Offset).stl

**Description**

Locking mechanism in its isolated form; it's meant to be integrated into other projects. The Positive and Negative both included. The lock is a simple mechanism that has the male part move through a hole, and then make a 90 degree turn to snap locked. Has a barrier element preventing over-turning.

**Instructions/How-to**

Attach the ButterLock Key model to the part you'd like to carry the male side of the lock, and the ButterLock Negative to the side you'd like to act as the female. The Negative has already been offset from the key by 1mm, and can therefore just be used directly as a boolean without any further offset.

ButterLock Key is best printed lying flat on its side, as it gives the strongest print. Both can be printed without supports so long as the surrounding model allows for it.

**Dimensions**

As is, the entire mechanism has a height of 3.5mm and a width of 15mm. It can obviously be scaled, but its mechanism can also easily be edited via included .step files. I'd also be happy to help making any needed adjustments.

ButterLock

ButterLock Key (3.5mm).step

ButterLock Key (3.5mm).stl

Remix of Weight-Bearing Directional Snap by Keep Making. Has small thread inserted in center.

Weight-Bearing Directional Snap With Small Thread

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Multiboard ButterLock Snap

ButterLock

Weight-Bearing Directional Snap With Small Thread