Schedule of Revenue Recognition - Sales Revenue by Product Line (Details) - USD ($)	3 Months Ended		9 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021
Disaggregation of Revenue [Line Items]
Sales revenue	$ 3,586,165	$ 4,419,401	$ 11,401,029	$ 12,134,336
Fluxing Systems
Disaggregation of Revenue [Line Items]
Sales revenue	$ 252,000	$ 104,000	$ 960,000	$ 579,000
[custom:SalesRevenuePercent]	7.00%	2.00%	8.00%	5.00%
Integrated Coating Systems
Disaggregation of Revenue [Line Items]
Sales revenue	$ 193,000	$ 60,000	$ 787,000	$ 780,000
[custom:SalesRevenuePercent]	5.00%	1.00%	7.00%	6.00%
Multi-Axis Coating Systems
Disaggregation of Revenue [Line Items]
Sales revenue	$ 1,493,000	$ 2,721,000	$ 4,962,000	$ 6,692,000
[custom:SalesRevenuePercent]	42.00%	62.00%	44.00%	55.00%
OEM Systems
Disaggregation of Revenue [Line Items]
Sales revenue	$ 503,000	$ 637,000	$ 1,819,000	$ 1,808,000
[custom:SalesRevenuePercent]	14.00%	15.00%	16.00%	15.00%
Other Product Line
Disaggregation of Revenue [Line Items]
Sales revenue	$ 1,145,000	$ 897,000	$ 2,873,000	$ 2,275,000
[custom:SalesRevenuePercent]	32.00%	20.00%	25.00%	19.00%
Total Product Line
Disaggregation of Revenue [Line Items]
Sales revenue	$ 3,586,000	$ 4,419,000	$ 11,401,000	$ 12,134,000