Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018
Cash flows from operating activities:
Net loss	$ (989,586)	$ (845,497)
Adjustments to reconcile net loss to cash provided by (used in) operating activities
Depreciation & amortization	391,156	411,499
Share-based compensation	115,647	135,698
Deferred taxes		(275,000)
Gain on sale of property and equipment		(13,645)
Changes in:
Accounts receivable-trade	257,348	(958,744)
Inventories	401,822	(1,461,763)
Prepaid expenses	(16,982)	(7,907)
Accounts payable	(206,204)	1,046,607
Deferred revenue		(100,000)
Accrued expenses	(274,325)	247,087
Net cash provided by (used in) operating activities	(321,124)	(1,821,665)
Cash flows from investing activities:
Purchases of property and equipment	(250,128)	(343,576)
Proceeds from sale of property and equipment		13,645
Net cash provided by (used in) investing activities	(250,128)	(329,931)
Cash flows from financing activities:
Net borrowings on line of credit	412,732	900,000
Net cash provided by (used in) financing activities	412,732	900,000
Net increase (decrease) in cash and cash equivalents	(158,520)	(1,251,596)
Cash and cash equivalents at beginning of period	628,804	1,339,572
Cash and cash equivalents at end of period	470,284	87,976
Cash paid for taxes, net of refunds	$ 485	$ 486