BALANCE SHEETS - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Current Assets
Cash	$ 1,802,839	$ 920,802
Accounts receivable Trade, less allowance for doubtful accounts of $15,000	477,779	336,009
Other	153	0
Inventories	2,752,845	617,444
Prepaid expenses	613,425	138,175
Total current assets	5,647,041	2,012,430
Property and Equipment, at cost
Machinery and equipment	8,017,850	7,824,563
Furniture and fixtures	127,610	132,543
Leasehold improvements	360,225	327,904
Construction in progress	138,067	22,504
Property, Plant and Equipment, Gross	8,643,752	8,307,514
Less accumulated depreciation and amortization	(6,720,847)	(6,422,448)
Property, Plant and Equipment, Net	1,922,905	1,885,066
Other Assets	75,613	52,078
TOTAL ASSETS	7,645,559	3,949,574
Current Liabilities
Capital lease obligations, current portion	114,853	129,500
Notes payable, current portion	0	221,105
Accounts payable	321,348	307,498
Customer deposits	3,202,447	407,956
Accrued compensation	211,227	83,314
Accrued expenses and other	125,130	138,662
Total current liabilities	3,975,005	1,288,035
Capital lease obligations, net of current portion	147,878	181,744
Total liabilities	4,122,883	1,469,779
Shareholders' Equity
Convertible preferred stock, Series B, 10% cumulative, nonvoting, no par value, $10 stated value, optional redemption at 103%; optional shareholder conversion 2 shares for 1; 24,152 shares issued and outstanding	514,438	514,438
Common stock, no par value, authorized 15,000,000 shares; 4,277,731 and 4,185,839 shares issued and outstanding, respectively	10,275,733	10,131,307
Additional paid-in capital	2,280,060	2,289,474
Accumulated deficit	(9,547,555)	(10,455,424)
Total shareholders' equity	3,522,676	2,479,795
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 7,645,559	$ 3,949,574