Weld Constraints issues

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#1 
local event = script.Parent.Shoot
local dropRight = script.Parent.DropRight

local rightHand = script.Parent.HandR
local TS = game:GetService("TweenService")

local tweenInfo = TweenInfo.new(1, Enum.EasingStyle.Linear, Enum.EasingDirection.Out)

local RightAttached = false
local LeftAttached = false

local Rightdebounce = false

local PartRightTouch
local PartLeftTouch

local weld = script.Parent.HandR.Grab

local inAnimation = false

event.OnServerEvent:Connect(function(player, side, target)
	print(side, RightAttached, Rightdebounce)
	if side == "Right" and RightAttached == false and Rightdebounce == false and inAnimation == false then
		print("first")
		local tweenToTarget = TS:Create(rightHand, tweenInfo, {Position = target})
		inAnimation = true
		tweenToTarget:Play()
		tweenToTarget.Completed:Wait() 
		inAnimation = false
		rightHand.Touched:Connect(function(hit)
		
			if hit and hit:IsA("BasePart") and not Rightdebounce then
				
				if hit.Anchored == false then
					weld.Part0 = hit
					hit.Massless = true
					hit.CanCollide = false
					Rightdebounce = true
					PartRightTouch = hit
				else
					
					local tweenBack = TS:Create(script.Parent.HandR, tweenInfo, {Position = script.Parent.PosR.Position})
					inAnimation = true
					tweenBack:Play()
					tweenBack.Completed:Wait()
					inAnimation = false
					Rightdebounce = false
				end
						
			end
		end)

		
	elseif side == "Right" and RightAttached == false and Rightdebounce == true and inAnimation == false then
		print("second")
		RightAttached = true
		local tweenBack = TS:Create(script.Parent.HandR, tweenInfo, {Position = script.Parent.PosR.Position})
		inAnimation = true
		tweenBack:Play()	
		tweenBack.Completed:Wait()
		inAnimation = false
	end
end)


dropRight.OnServerEvent:Connect(function()
	if inAnimation == true then return end


	if PartRightTouch then
		PartRightTouch.CanCollide = true
		PartRightTouch.Massless = false

		weld.Part0 = nil

		
		local partPos = rightHand.Position
		PartRightTouch.Position = partPos

		
		RightAttached = false
		PartRightTouch = nil
	end

	task.wait(1)
	Rightdebounce = false
end)

I have this code, problem is when it grabs a part, it grabs it from the middle of it, which for larger parts will cause it to be inside the players character when you pull it back. This can be fixed using weld constraints instead of regular weld which the “Grab” object currently is, however that would make it so that I cant tween the Hand when something is welded to it as tweening Position does not move welds along with it and tweening CFrame which i tried many times in many different ways does not work.

I would like to know how I can make it weld not to the middle of the part that it hits but to where in the part it actually hits without making it impossible to tween as in the case of weld constraints

any help is appreciated

#2

Calculate the offset from the hit position to the part’s center

local function grabPart(hand, hit, hitPosition)
    if hit and hit:IsA("BasePart") and not hit.Anchored then
        -- Calculate the offset from the hit position to the part's center
        grabOffset = hit.CFrame:ToObjectSpace(CFrame.new(hitPosition))
        
        -- Create a new Weld
        local weld = Instance.new("Weld")
        weld.Part0 = hand
        weld.Part1 = hit
        weld.C0 = CFrame.new(hand.Position:ToObjectSpace(hitPosition))
        weld.C1 = grabOffset
        weld.Parent = hand
        
        hit.Massless = true
        hit.CanCollide = false
        Rightdebounce = true
        PartRightTouch = hit
        
        -- Store the weld for later use
        hand.GrabWeld = weld
    end
end
#3

I don’t understand, how would that fit into the code i posted