Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net loss	$ (845,497)	$ (924,389)
Adjustments to reconcile net loss to cash provided by (used in) operating activities
Depreciation & amortization	411,499	412,982
Share-based compensation	135,698	149,068
Deferred taxes	(275,000)	(623,000)
Gain on sale of property and equipment	(13,645)
Changes in:
Accounts receivable-trade	(958,744)	(1,074,569)
Inventories	(1,461,763)	295,623
Prepaid expenses	(7,907)	8,864
Accounts payable	1,046,607	174,735
Deferred revenue	(100,000)
Accrued expenses	247,087	(8,075)
Net cash provided by (used in) operating activities	(1,821,665)	(1,588,761)
Cash flows from investing activities:
Purchases of property and equipment	(343,576)	(129,389)
Proceeds from sale of property and equipment	13,645
Net cash provided by (used in) investing activities	(329,931)	(129,389)
Cash flows from financing activities:
Net borrowings on line of credit	900,000
Net cash provided by (used in) financing activities	900,000
Net increase (decrease) in cash and cash equivalents	(1,251,596)	(1,718,150)
Cash and cash equivalents at beginning of period	1,339,572	3,407,760
Cash and cash equivalents at end of period	87,976	1,689,610
Supplemental cash flow information:
Cash paid for taxes, net of refunds	$ 486