Asset vs Expense Treatment for Small Tools/Equipment
All of the regulations changed with the Dec 2017 tax law update. It helps to meet with your own CPA to cover this type of regulation and how it applies to your own business and your own activities. If you are going to do your own Bookkeeping and manage the financial data, unless you also intend to get up to speed on every tax rule detail, meet with a CPA once in a while to get proper guidance.
I teach this in my class as, "Let's Maximize the tax rules to your benefit."