Heliana's Guide to Monster Hunting, pg. 220
You learn to wield tools with precision and efficiency, improvising where necessary.
• Increase your Strength, Dexterity, or Constitution by 1, to a maximum of 20.
• You gain proficiency with 3 tools of your choice.
• When you make a Manufacturing check using a tool with which you are not proficient, you can add half your proficiency bonus instead, and do not suffer any disadvantage due to not having proficiency with the tool.
• Each hour you spend manufacturing an item counts as 2 hours towards the item’s completion.