I was too lazy to work out how to use Weapon/Armour/Item script and to lazy to look for another makin tut, se heres a event thingy to advance equipment with certain items.
1. First, make a few new items. Name them what your materials are. Also find some icons for them as well. Steel Booster and Metallic Connector in my case:
[spoiler](https://rmrk.net/proxy.php?request=http%3A%2F%2Fi4.photobucket.com%2Falbums%2Fy144%2FArmy100%2FExamples%2FPart1TutMaking.png&hash=fee9d51455331806900ca8cbb92a3f8e9c4e0da0)[/spoiler]
2. Make a new event and make a conditinal branch. Make it say you need a material, my 'Steel Booster for example. Then make another branch under the first line saying you need the other piece (My Metallic Connector). Also, put in a Text Entry at the else for the first material to say you need it:
[spoiler](https://rmrk.net/proxy.php?request=http%3A%2F%2Fi4.photobucket.com%2Falbums%2Fy144%2FArmy100%2FExamples%2FPart2TutMaking.png&hash=77982f1139ead9dd4e1b8fc321f44a23f5b1e809)[/spoiler]
3. After that, in the new 'Else' line for the second material put in saying u need this material. Then under the conditinal branch last made add in another branch saying you need the item/armour/weapon you are upgrading is in your inventory:
[spoiler](https://rmrk.net/proxy.php?request=http%3A%2F%2Fi4.photobucket.com%2Falbums%2Fy144%2FArmy100%2FExamples%2FPart3Tutmaking.png&hash=e0edca83a0cc296f143b3b3fd8997a7a5c2b2b26)[/spoiler]
4. Lastly to finish up, in the new else spot put in you need the weapon/item/armour in your inventory to upgrade it. Then in the conditinal branch left over add in decrease item/armour/weapon to the two items to mix and the weapon/armour/item you are upgrading in decrease to. And finally add in, increase for the item you result with and then put in a text entry saying you obtained the item. Also, if you want add in other things.
[spoiler](https://rmrk.net/proxy.php?request=http%3A%2F%2Fi4.photobucket.com%2Falbums%2Fy144%2FArmy100%2FExamples%2FPart4TutMaking.png&hash=7b87e8f27158d74f6c2071b5a63edefe890493dc)[/spoiler]
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If I missed anything tell me ;)
You added the steel boster and metalic thingy instead of taking them away;
overwise its fine. It's possible to have a person who will have options for what to make and it will tell you what you need etc. Maybe you should show this kinda thing?
I was lazy. Anyway, it was a rushed tut XD