How to fix WeldConstraints Glitching and Flinging Everywhere?

I have made a script that connects all of the lines and dots together but when I unanchored them the parts just start glitched and jumping, and when my character touches them it flings me, I don't know how to upload pictures or videos but this is the code I used to connect them, I did not want to show the whole code since this is the only information that actually welds them together.

    local Weld1 = Instance.new("WeldConstraint")
    Weld1.Part0 = Line
    Weld1.Part1 = Part1 -- Part 1 and 2 are both dots
    Weld1.Parent = Line

    local Weld2 = Instance.new("WeldConstraint")
    Weld2.Part0 = Line
    Weld2.Part1 = Part2
    Weld2.Parent = Line