[HerenIstarion]

Several points:

1. Orks do 'build tools'
2. I don't remember reading about time period of hunting, i.e. - how long did elves hunt petty-dwarves? It may have been couple of occassions, not more, which is excusable (see above about night)
3. Mim was not carrying all of axes and weapons he had on him when he was caught. Couple of occassions I refer to in Clause 2 may have happaned by accident, when both parties (lone elf and party of petty dwarves) were out on other business than war. Imagine company of petty dwarves on root-gathering expedition seeing an elf taking a stroll. They kill him with handy weapons, i.e. selfsame 'roots' or stones.
4. Read clause 1