Is there a way to hide a part in an union?

so im basically doing a switch , but to easily animate it, im unioning it with a little part in the air to balance it, is there a way to hide it? or is there a way to animate a switch (its more like a lever) with like an hinge point?

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If it’s a part you can use the Properties>Appearance>Transparency> 0 (Fully visible) - 1 (Invisible)

Or have I misread your post?

Ah I see what you mean, opposed to unioning try welding them together?

no, im trying to make a full union but with 1 part invisble

Wait, I ay be able to help. So, you want one union and one part of that union invisible?

yes i want only 1 part transparent

That’s a very easy thing to do.

So first, separate your union. Then duplicate the parts that you got from the separation and group them in a model. Now You have 2 sets of parts that if unioned will get your wanted asset. Union one set of parts, make the resulting union invisible and lastly, from your second set of parts that you haven’t unioned, delete what you don’t want to be seen.

These steps won’t work on all types of unions. You might have multiple unions inside that union which will make it more difficult.

If you are still having trouble, message me on discord and I’ll try my best to guide you: D3V0URED#0332

I think I know that… Make two unions. One witch the switch up and down. The lat thing would be scripting for it to appear and dissapear. Kinda easy I’f you ask.
But unioning leaves a bad thing, only an unic material.

no lol, i want it animated, and this is off topic

Then you can just union all. Besides the switch as one, and the frame as other. I also suppose you will need to use Vector3 or something to make it move. But ya gotta script the limits of moves.

I say you separate it first and duplicate the separated parts, then rake it so the negative part fits the area that needs be transparent and then resize the other part that will be unioned so it fits in the spot and then just group or something.

Looks like you’re trying to get a part to revolve around another part and you want the 2nd part to be invisible. Unioning these parts together is not a good way to accomplish this. Animating a switch like this should be fairly simple with body movers or CFrames. Edit: forgot to mention this but it’s probably easiest if you just weld the parts together. Just weld the first part to the second part, then if the second part rotates, the first part will also rotate with it.
This article may be helpful: CFrames | Documentation - Roblox Creator Hub