Every project will differ. Assess with the DM how much research it will take and what the relevant stat is. (Usually Intelligence; this is book research, old school.)
However, there is a standard rule that the research for a major magical crafting project is 50 research points, and that the person doing the majority of the crafting must perform at least 25 of those research points.
Also, while replicating an item (see below), there will be a synergistic bonus with research on that item or one closely related to it (to improve or enchant said item).
Conversely, creating or recreating an item drastically different from one’s current research will likely impede both endeavours if practiced simultaneously.
Each item has a point value equal to roughly 1/40 of its GP value.
You accumulate points every week based on the DC you hit with a relevant stat/Proficiency. (Eg: JP gets +7 for Con (Smiths’ Tools).)
Inspiration is allowed; other boosts are currently not.
You can use a session’s worth of Inspiration to reroll if you so choose.
A character with the requisite training can spend their downtime assisting another character’s crafting, granting advantage on the roll.
|Check DC||Crafting Points||GP Cost per Point||GP Cost Total|
|5||1||45 gp||45 gp|
|10||2||40 gp||80 gp|
|15||3||35 gp||105 gp|
|20||5||35 gp||175 gp|
|25||7||30 gp||210 gp|
|30||10||30 gp||300 gp|
|35||15||25 gp||375 gp|
|40||20||25 gp||500 gp|
Certain character bonuses can augment the above. JP, for instance, gets +1 free point / week because he is a divinely inspired crafter.
This process can also be made faster (risking quality, raising cost) or slower (safeguarding quality, lowering cost) at DM’s discretion.
Bards can spend downtime writing music that grants small bonuses to inspires. Details here.
PCs can train NPCs for duty beyond the Wall. If you’re interested in how this works, contact James Minor. The current list of trained NPCs is located at the Trained NPCs page.
Smithing: When making a second copy of an item, any roll totalling 14 or less counts as a 15 unless you are rushing the work.
Other areas of endeavour may differ.