Click and drag block moving erratically

[merry knoll]

see what I mean in the video, im new to scripting and have no clue whats causing the jank movement, I think it's because it's interacting with itself but I wouldn't know how to fix that, anyone have any ideas?
heres the code:

local down = false
local UIS = game:GetService("UserInputService")
local dragpart = workspace.DragTask
local mouse = game.Players.LocalPlayer:GetMouse()

mouse.Button1Down:Connect(function()
    down = true
end)

mouse.Button1Up:Connect(function()
    down = false
end)

mouse.Move:Connect(function()
        if down == true then
        dragpart.CFrame = CFrame.new(mouse.Hit.X, 0, mouse.Hit.Z)
    end
end)

[gilded yoke]

it does look like the mouse is detecting the part

You can just add the part to a folder

then set the folder to the mouse ignore

local Mouse = game.Players.LocalPlayer:GetMouse()
local folderToFilter = workspace:WaitForChild("FolderToFilter") 
Mouse.TargetFilter = folderToFilter

[queen helm]

Is the part anchored? If its not anchored it will fall in-between mouse move events

Also I recommend using UserInputService instead of Player:GetMouse()

[merry knoll]

yea it's anchored

[merry knoll]

gotcha

[merry knoll]

lemme try this rq

[queen helm]

You might want to double check that nothing is changing its anchored state

Examining the video a bit more, it seems the part is being pushed out of the ground because its halfway clipped inside the baseplate

[queen helm]

And for mouse.Hit, use raycasts. Raycasts give you extra information like hit normal which can be useful for making the placed block sit perfectly on top of whatever your mouse is on

[merry knoll]

thats just cus the y is set to 0, it sets it's centre down below baseplate

it's 6 studs high

[queen helm]

Exactly, and (at least with the code you've sent) there is nothing that is setting the position of the block to anywhere but Y0

So either something else is changing its position or its unanchored

[merry knoll]

give me a moment to do this first fix bcs I think that it might work

[merry knoll]

this worked 👍 👍

thanks man

and thanks @queen helm for the effort

think ur too good at coding for my problems 😭

[gilded yoke]

If that's all you are doing that is fine

but if you are doing something more complex, like creare said, raycasting would be the better option

[merry knoll]

I started a few days ago, that sounds a bit complex for me at the moment