Quote from levines
Hi Mdiyo, not sure where to put your bugs (there is nothing in the OP about that).
Im not sure if this is already an known bug or that its new to you. Your Hammer is able to clear out obsidianportals. (put a stone block next to it and you can just clear the portal.
If you want/need any more info just ask.
This is fixed in the dev build, and very well known.
Quote from NekoiNemo
Can somebody please provide some data on how parts affect tier 2 tools (like that actually affects power of hammer - head of plates)?
And also math behind two similar parts in one tool (two plates in hammer or two rods in sword) - how they affect tool stats? Is it average value between two or do their effects stacks?
You can take a look at the source code, but Mdiyo has not explained the exact math due to how complicated it is- He isn't exactly using simple math for the T2 tools durability.