How do i make so that my player can place tools as anchored parts in the game?

There's not enough information on your Question to give an answer. But hopefully I can help. I made a Part in Workspace with a Click Detector inside of the Part. Along with a Server Script inside of the Click Detector. The Script allows a Player to click the Part to obtain the Part as a Tool into their Backpack. Once the Player Equips the Tool, the Player can Left Click to drop the Tool into Workspace as a Part. And the method of grabbing and dropping the Part is infinite. Along with no errors. Hopefully you can study this code to get an understanding and apply it to your code. Here's the Code:

script.Parent.MouseClick:Connect(function(plr)
    local tool = Instance.new("Tool")
    local handle = script.Parent.Parent:Clone()
    handle.Name = "Handle"
    handle.Parent = tool
    tool.Parent = plr.Backpack
    script.Parent.Parent:Destroy()
end)
script.AncestryChanged:Connect(function(ancestor)
    if ancestor.Parent:IsA"Model" then
        if ancestor:IsA"Tool" then
            local tool = ancestor
            tool.Activated:Connect(function()
                tool:FindFirstChildOfClass("Part").Parent = workspace
                workspace.Handle.CFrame = ancestor.Parent.HumanoidRootPart.CFrame * CFrame.new(0,0,-5)
                workspace.Handle.CanCollide = true
                tool:Destroy()
            end)
        end
    end
end)