If you need it, yes use a line of credit from a bank or credit union
However if you have no job, it's hard to get.
Reliable income is what they like.
A business should be able to self fund, with debt you run the risk of ever increasing debt.
Do you still have the original 6K ?
If you can't continue to self fund, you need to increase income or decrease expenses.
This is powerful - it's easier to reduce expenses that increase income.
"A penny saved is a penny earned", not really.
Net income, after taxes overhead and business costs come into play.
You have to bring in almost 2x the amount of new sales revenue to net the same amount.
Inventory turnover is important, move it through the system faster.
Look at cost accounting. What makes more; larger higher complexity high dollar woods, or smaller simpler, cheaper that move in greater quantity.
One man operations run up against time.
Consider some woods that sell in bundles, say 4x at a time to consolidate shipping and admin time