# Could somebody explain glue to me?

More specifically, the F0, F1, F2, and F3 properties. The wiki is kinda confusing.

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I think theyâ€™re the corners of the brick. If you want a working demo, take HotThothâ€™s glue testing

C1 and C0 define how P0 and P1 are connected to some central point of a weld. For Glue, weâ€™ve got that, and also these F values. The F values indicate points that are offset by some Vector3 from that central point (in that pointâ€™s object-space coordinates). For each of the F values, imagine that the Glue has two handles, one welded to P0 and one welded to P1, and both offset from those parts as defined by C_ and the F_ value. The Glue attempts to keep these two handles together.

If you want a rigid Glue, youâ€™d use these four points to define coplanar points. However, you can also be a bit more creative and make different types of joints with Glue. If all the F values are the same, youâ€™ve got a ball and socket joint about that point. If the values are collinear, youâ€™ve got a hinge along that line.

I hope this sort of helps.

Edit: Not entirely sure, but I may be missing something. The wiki does mention that no F value should ever use the Z axis, and Iâ€™ve got no idea what thatâ€™s about. There may be something about all the points needing to be coplanar or something. However, so far Iâ€™ve been able to use Glue by thinking about them in this way. It may take some fiddling and experimentation, but Iâ€™m pretty sure this is at least the general idea.

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Isnt it then possible to make some sort of suspension out of them like olioe struts on an aircraft?

Maybe. They are a bit givey. You may run into issues with physics just being bad, or the glue breaking when under too much pressure. But totally give it a a try and let us know!

i swer it wasnt me!!1!!

This doesnâ€™t seem to be accurate in my testingâ€¦

My central point is between these two points (I know it is because I set C0 and C1 manually in the command bar), and my F values are:

However, look at this (itâ€™s a very heavy car, donâ€™t judge):

The Fâ€¦ values seem to be relative to Part1! Because when I set all the Y values to half of Part1â€™s heightâ€¦

I think Glue was deprecated last year. Itâ€™s not recommended that you use it for new projects.

That doesnâ€™t mean information on it shouldnâ€™t be available. Nothing else in Robloxâ€™s engine offers what Glue does.

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