openGrid Multiboard Multiconnect offset snaps

These snaps provide the ability to mount existing Multiboard MultiConnect models into openGrid without reparameterizing the multiconnect snap spacing.

This is a re-implementation of origin415's offset snaps here:

[https://makerworld.com/en/models/1207512-opengrid-full-lite-multiconnect-multiboard-adapter?from=search#profileId-1480392](https://makerworld.com/en/models/1207512-opengrid-full-lite-multiconnect-multiboard-adapter?from=search#profileId-1480392)

This implementation includes 11 offsets (-5 to 5 in 1mm increments) which allows for a large variety of column attachments. There are directional and non-directional snaps for both full and lite boards (the non directional snaps only go from 0-5mm, since you can just turn them upside down to get a negative offset)

Spacing Betwen Columns	Spacing(mm)	Offset1	Offset2
0 (adjacent)	3	0	3
1	6	-3	3
2	9	-4	5
3	12	* -7 *	5
4	15	* -6 *	* -7 *
5	18	-5	5
6	21	2	5
7	24	0	-4
8	27	0	-1
9	30	0	2
10	33	0	5

Both 6 and 7mm offsets would be needed to support column spacing 3 and 4, and those move the tab significantly off the snap and would be much weaker. They can be created from the openScad model easily if needed though.

The original snap openScad model is from metasyntactic which I've only silightly modified to add the MultiConnect attachment

Thanks to David D for both openGrid and MultiConnect

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