lol, black hole achievement.
yay…
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I like this idea! I think it could really expand how much detail creators can put into their games!
Good Update Roblox! I think now the builders are much happy! Thanks!
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Sweet!
Is there any reason why we can’t just have a single collision plane? Just a 2D plane with collision top/bottom?
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Try out our other recently added feature if you’re going to be working with a lot of small parts: 
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Roblox collision detection is discrete. Parts will change position each step, and if it penetrates something, it moves back out. If moving fast enough, and the part it comes into contact is thin enough, the first step could be on one side of the part, and the next step could be on the other side. No collision detected. This is referred to as tunneling. It’s one disadvantage of discrete collision detection, and it’s what keeps us from letting collision geometry go below 0.05.
In contrast, continuous collision detection calculates if a collision will occur before it happens. No tunneling. Roblox doesn’t have this, yet.
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Cool feature! I shrunk down one of my game’s islands down to a ~30x20 stud area (the regular size is ~1500x1000 stud area). Downside is that it crashed my pc a few times trying to get it that small as well as trying to delete it…
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Could you DM me this model so I can try and repro the crash?
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It can be very useful for harder tightrope in obbies
Like 0.01 studs tightrope in terrifying or 0.001 stud in Horrible difficulty
The issue isn’t it being small, the entire island is at least 7000 parts/meshes so it’s going to crash regardless.
can I try and see if I can fix it anyways?
The walls would be very odd if people made its size .001 .
Black holes never hurt anyone… and you can’t prove that otherwise
I say greenlight it.
cool update though, thx roblox staff
Do keep in mind the currently the physics will stop at .05 as per the post, temporarily until there is a fix.
But 0 studs is nothing so it would be no block all together… 
1 Like
Glad to see that I can do this now without using meshes. One of my biggest current projects is a 1:2250 scale model map, and I’m constantly working with parts that need to be under 0.05 studs.
Considering one stud on my map is 630 meters, I can now finally recreate things a meter wide without having to do anything hacky. Thanks, Roblox!
The move grid gets set to 0.01, but the part size limit remains as 0.05 for me, beta feature is on, am I missing a step?
Yeah let the guy give it a shot.
Is this going to have any effect on floating point error, especially for the resize tool, because I’m worried that there will be a bit of randomness and chaos when I’m trying to do this, especially for ultra microscopic high precision builds that might be possible after this
Another possibility I can see is that a microscopic building might be possible with microscopic characters, but the movement will have to be custom-made. Also, I’m worried about camera issues, because if such a game is made where there is a room that’s microscopic and the characters are microscopic, I’m worried can the camera handle it well, or will things start breaking