The unions dont cut well

[tEleTuBiDoRaDo]

the archway was made with the archimedes plugin

[Fe_ct]

This can be fixed by changing the union’s collision fidelity

[tEleTuBiDoRaDo]

[PANDASonNOOB (BurgerNFries)]

change it to the precise convex something something i forgot what its called

[tEleTuBiDoRaDo]

with “PreciseConvexDecomposition” worked, but it not will be a problem with performance?

[Fe_ct]

should be fine since it’s cut with basic shapes

[PANDASonNOOB (BurgerNFries)]

More precise collision would obviously be more expensive, thats not something you can avoid (atmost you can decrease the expense)

Its a simple shape anyways so it wouldn’t really matter

[tEleTuBiDoRaDo]

ok, thank you very much for all the answers, it solved my problem.

[Crazedbrick1]

You say the arch was made using Archimedes, but you use unions. Which is it?

[tEleTuBiDoRaDo]

I converted all the parts to union after I made it, it’s my first build I’ve done

[Crazedbrick1]

I’m confused. If Archmedies made the arch for you, what are you using the union for?

[tEleTuBiDoRaDo]

I made the arch with archimedes, then all those parts that archimedes generated, I converted them to union, then the arch was the same but in one piece, once I finish the whole model I plan to convert it to mesh, so that it is better in terms of performance.