Why is my custom tool glitched when I equip it?

1. Your tool is anchored, you will need to have your handle and the rest of the parts inside your tool anchored.

2. You need to weld your parts with a script, and here is helpful wiki that you can use to do exactly that http://wiki.roblox.com/index.php?title=Weld

If your tool is anchored it will do that. You can either: 1. Go to the properties of the tool and uncheck anchored or 2. When scripting add this line:

game.ReplicatedStorage.Tool.Anchored = false

ok I did that know it works but, only the handle shows...

Weld the sword together

I don't really want to explain, but if you need an explanation here's a link to the wiki. If you have any particular questions ask me.

-- Regular script inside tool
function Weld(x,y)
    local W = Instance.new("Weld")
    W.Part0 = x
    W.Part1 = y
    local CJ = CFrame.new(x.Position)
    local C0 = x.CFrame:inverse()*CJ
    local C1 = y.CFrame:inverse()*CJ
    W.C0 = C0
    W.C1 = C1
    W.Parent = x
end

function Get(A)
    if A.className == "UnionOperation" then
        Weld(script.Parent.Handle, A)
        A.Anchored = false
    else
        local C = A:GetChildren()
        for i=1, #C do
        Get(C[i])
        end
    end
end

function Finale()
    Get(script.Parent)
end

script.Parent.Equipped:connect(Finale)
script.Parent.Unequipped:connect(Finale)
Finale()

I did not personally make this script. I'm unsure who made this script.

And as others suggested, unanchor the tool.

Good Luck!