I'm trying to do 2 CFrame operations (with tween) on 1 model

[thorn grail]

i want the animations to be at different intervals thats why they are separate

[sour hearth]

I wouldn't have used tween service, instead I would have used a runservice loop which sets the y position of the dropper to a sine wave and the rotation can be set in a similar way

[frozen stag]

that could work, though if you want to use tweens youll have to wait for the first one to finish before running the next one
https://create.roblox.com/docs/reference/engine/classes/Tween#Completed

[sour hearth]

like this

-- Services --
local RunService = game:GetService("RunService")

-- Variables --
local Dropper: Model = workspace.Dropper
local dropperOrigin = Dropper:GetPivot()

-- Functions --
local function UpdateDropper()
    local t = time()
    local newDropperPosition = dropperOrigin.Position + Vector3.new(0, math.sin(t), 0)
    local dropperAngle = t

    Dropper:PivotTo(CFrame.new(newDropperPosition) * CFrame.Angles(0, t, 0))
end

-- Connections --
RunService.RenderStepped:Connect(UpdateDropper)

[thorn grail]

ill try thanks :p