Very simple guide on how to level up your crafting skill fast. I knew about this method since a long time but didn’t see anyone posting it, so decided to share. I’m also not 100% sure if it will work for you, but for me it works perfectly fine.
How It Works?
You don’t have to do anything crazy or special. Duplicating isn’t necessary as well. All you need is MAXDOC MK I and any other healing item, ex. BOUNCE BACK MK I. The more MAXDOCs you have, the faster you level up. It is very common item, so you shouldn’t have any problems finding it.
Now to get the exp, you will have to enter your backpack, locate your second item (BOUNCE BACK MK I in this case) and left-click on it, then left-click on MAXDOC MK I. It would use both of these items and MAXDOC MK I should be equipped at this point. If that’s true, you should be able to disassemble that item without losing it. Try disassembling one at first. If it doesn’t disappear, you can disassemble and still keep all of them. If that’s the case, do it as many times, as you want. After closing your inventory, you should be rewarded with crafting exp.
Most likely, this exploit also works with any kind of grenades or consumables, that can be equipped, but the ones mentioned above are the most common, so I used them.
In my case, the MAXDOC MK I is now glitched after using the exploit, so I can disassemble it as much as I want and get exp, but no crafting materials.