Dolmen

This one is technically missable because there are no enemy drops for the materials to make one weapon, the Driller Great Sword. The material for this weapon, the Driller Striker Inner Frame, is only dropped from items, which do not re-spawn. If you get very unlucky and do not get 2 of this item before you've broken all breakables, you cannot craft all weapons.

If you want to be sure, back up your save game to the cloud (and disable auto-saves) once you get to the "Old Lab" area. Once there, go around to as many rooms as you can, breaking items, until you find 2 Driller Striker Inner Frames. Restore your save game from the cloud if you have gotten to a point where you believe you have tried enough, and try again. I personally got several more beyond the two I needed, but I recommend making a backup just in case.

Several of the weapons require boss components, which can be received every time you kill a boss; to kill the same boss again, go to their lair or the guy on the second floor of your ship and choose to respawn the boss (costs 3 Dolmen Fragments for each attempt).

Note that your starting weapon does not count towards this list.

The full list of weapons is below.
Dementular Claws
Ancient Kalrath
Driller Claws
Fire Zoan Axe
Ice Zoan Axe
Acid Zoan Aze
Fire Zoan Great Sword
Acid Zoan Great Sword
Ice Scrap Sword
Fire Scrap Sword
Zimo Cudgel
Zimo Claws
Zoan Claws
Zoan Chainsaw
Tretaxe
Driller Pickaxe
Driller Infortus
Queen Caniptei Great Club
Dementular Swords
Dual Nikiderma Swords
Bizarre Axe
Driller Great Sword