I see ... well i give you that it would be "possible" ...
Even tho concidering that our camp is on
sand-y beach in middle of nowhere, i still have my doubts.

And no matter possibilities, i just dont like having any artisans in our camp ... it just dont feels right. :-/
At least to me, camp is just "random place where you decided to sleep during your travels, that looks suspiciously exactly the same as the last one" (

) ...
Adding merchants, artisans and other people would fit a lot more if we would be supplying some fortress we are returning to at regular basis, as it was in Dragon Age Inquisition for example.
As for duck tap ...
Im no blacksmith myself, nor i had ever any interest in historical fencing ... but i dont think you need any sophisticated tools to put the spear head on the new stamp. O_o
And when we were creating our Sussur bar weapon, we needed regular Blacksmith workshop.