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Segment Reporting: Schedule of Segment Reporting by Segment (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Net sales $ 8,059,477 $ 8,050,931 $ 15,912,658 $ 16,780,656  
Depreciation     645,423 612,107  
Accounts receivable - Less allowances of $160,000 5,392,952   5,392,952   $ 4,275,882
Inventories, net 6,937,694   6,937,694   7,327,653
Net property, plant and equipment 11,358,858   11,358,858   $ 11,665,082
Fastener          
Net sales 6,909,550 7,361,113 13,633,404 15,217,926  
Depreciation 291,994 272,679 585,375 545,315  
Segment operating profit 488,412 (1,093,218) 99,288 (1,521,719)  
Selling and Administrative Expenses 0 0 0 0  
Interest income 0 0 0 0  
Capital expenditures 65,005 406,629 119,227 742,695  
Accounts receivable - Less allowances of $160,000 4,870,471 5,543,477 4,870,471 5,543,477  
Inventories, net 5,378,034 7,940,159 5,378,034 7,940,159  
Net property, plant and equipment 8,932,993 9,759,709 8,932,993 9,759,709  
Other Assets 0 0 0 0  
Assembly Equipment          
Net sales 1,149,927 689,818 2,279,254 1,562,730  
Depreciation 29,484 30,732 58,968 61,464  
Segment operating profit 363,920 87,166 686,541 276,481  
Selling and Administrative Expenses 0 0 0 0  
Interest income 0 0 0 0  
Capital expenditures 240,573 0 279,436 0  
Accounts receivable - Less allowances of $160,000 522,481 360,924 522,481 360,924  
Inventories, net 1,559,660 1,483,084 1,559,660 1,483,084  
Net property, plant and equipment 1,406,272 1,242,033 1,406,272 1,242,033  
Other Assets 0 0 0 0  
Unallocated Corporate          
Net sales 0 0 0 0  
Depreciation 540 2,664 1,080 5,328  
Segment operating profit 0 0 0 0  
Selling and Administrative Expenses (743,488) (681,199) (1,580,288) (1,219,736)  
Interest income 44,670 21,745 73,139 62,331  
Capital expenditures 0 (59,800) 0 17,553  
Accounts receivable - Less allowances of $160,000 0 0 0 0  
Inventories, net 0 0 0 0  
Net property, plant and equipment 1,019,593 1,008,192 1,019,593 1,008,192  
Other Assets $ 3,636,914 $ 4,625,285 $ 3,636,914 $ 4,625,285