How to make object instantiate once but still call next function.

hi all, I am having a mind melter trying to set up a early crafting mechanism, I want to press a button and have an object appear for the player to use a raycast to to place on the ground. this is all fine and works and when the player clicks the mouse it places a new object on the ground, however when i turn on the crafting system with (c key for now) the template object spawns over and over.

Code public bool craftingOn = false; public Transform spawner; public Transform[] myObjects; public Transform[] myRealObjects; public float rayDistance = 100f;

 public string tagCheck = "Ground";
 public bool checkAllTags = false;
 
 //need to link this to inventory so that items only go into arrays that are in the inventory.
 void Update () 
 {
         craftOnOff(myObjects[0],myRealObjects[0]);
 }

 void CraftItem(Transform unCrafted, Transform crafted)// this works pefect just need to adapt items that put into function
 {
     bool foundHit = false;
     RaycastHit hit = new RaycastHit();

     foundHit = Physics.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition),out hit,rayDistance);

     if(foundHit && !checkAllTags && hit.transform.tag != tagCheck)
         foundHit = false;
     if(foundHit)
     {
         unCrafted.position = hit.point;//use a loop here just test
         if(Input.GetButtonDown("Fire1"))
         {
             Transform clone;
             clone = Instantiate(crafted,hit.point,Quaternion.identity)as Transform;
         }
     }
 }

 void craftOnOff(Transform item, Transform realItem)//for now c turns on off crafting  ray for player.
 {
     if(Input.GetKeyDown(KeyCode.C))//need set this to turn on from a UI Button not key
     {
         craftingOn = !craftingOn;// turning on and off the crafting needs to be set up in controls properly
     }
     if(craftingOn)
     {    
         Transform cloneItem;
         cloneItem = Instantiate(item,spawner.transform.position,spawner.transform.rotation)as Transform;
         CraftItem(cloneItem,realItem);
     }
     if(!craftingOn)
     {
         //get rid of object if one is instantiated and player changes mind.
         // and add resources back to inventory
     }
 
 }