Need suggestions to get desired reference of mesh generation in my VR game

Unity Engine
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1

Hello, I am making a VR welding game and want some help generating a bid effect and glue effect in two scenes using mesh generation.

I have created a mesh generation script that looks somewhat like this GIF in a prototype I made:-
GlueMesh Prototype

I am using this link as a reference to show how It should look:-
Reference Effect

Can someone help in making my generation better (just like the ref link) and provide some reference code or tutorials to make the mesh thicker like a fluid?

Here is the mesh generator script I’m using:-
GlueMeshGenerator.cs (2.3 KB)

2 
using System.Linq;
using UnityEngine;

public class GlueMeshGenerator : MonoBehaviour
{
    public Transform glueGunTip;
    public float glueWidth = 0.1f;
    public float glueHeight = 0.05f;
    public Transform glueGun;

    private Mesh glueMesh;
    private Vector3 lastPosition;

    void Start()
    {
        glueMesh = new Mesh();
        GetComponent<MeshFilter>().mesh = glueMesh;
        lastPosition = glueGunTip.position;
    }

    void Update()
    {
        if (Input.GetKey(KeyCode.W))
        {
            glueGun.transform.position = new Vector3(glueGun.position.x, glueGun.position.y, glueGun.position.z + 0.05f);

        }
        if (Input.GetKey(KeyCode.A))
        {
            glueGun.transform.position = new Vector3(glueGun.position.x - 0.05f, glueGun.position.y, glueGun.position.z);

        }
        if (Input.GetKey(KeyCode.S))
        {
            glueGun.transform.position = new Vector3(glueGun.position.x, glueGun.position.y, glueGun.position.z - 0.05f);

        }
        if (Input.GetKey(KeyCode.D))
        {
            glueGun.transform.position = new Vector3(glueGun.position.x + 0.05f, glueGun.position.y, glueGun.position.z);

        }
        if (Vector3.Distance(lastPosition, glueGunTip.position) > 0.1f)
        {
            AddGlueSegment(lastPosition, glueGunTip.position);
            lastPosition = glueGunTip.position;
        }
    }

    void AddGlueSegment(Vector3 start, Vector3 end)
    {
        Vector3 direction = (end - start).normalized;
        Vector3 perpendicular = Vector3.Cross(direction, Vector3.up).normalized;

        Vector3[] newVertices = new Vector3[4];
        newVertices[0] = start + perpendicular * glueWidth * 0.5f;
        newVertices[1] = start - perpendicular * glueWidth * 0.5f;
        newVertices[2] = end + perpendicular * glueWidth * 0.5f;
        newVertices[3] = end - perpendicular * glueWidth * 0.5f;

        int[] newTriangles = new int[] { 0, 2, 1, 2, 3, 1 };

        int vertexOffset = glueMesh.vertices.Length;
        glueMesh.vertices = glueMesh.vertices.Concat(newVertices).ToArray();
        glueMesh.triangles = glueMesh.triangles.Concat(newTriangles.Select(t => t + vertexOffset)).ToArray();

        glueMesh.RecalculateNormals();
    }
}