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Alteration 22 Vent Door Knob
22.01 22.02 22.03 22.04              
Alteration 22 Page 03 NOTE: Any alteration will require it to be registered as Experimental-Amateur Built  E-AB
Parts
1 1.25" X 6" Aluminum rod  
1 300mm x 8mm T8 lead screw  
2 T8 Nut for 8mm lead screw  
1 1/2" X 6" Aluminum rod  
1 2'X6"X1/4" Aluninum bar  

This Alteration is to add a knob to open the vent doors

Step 01: Layout then mill the 90° sides to.

05/23/21
Step 02: Layout the retaining clip as shown.

05/23/21
Step 03: Mill to the layout lines.

5/23/21
Step 04: Mill then file to the layout lines

05/23/21 
Step 05: Layout the releaf for the vent knob.
Step 06: Mill to the center of the lay out lines.

05/23/21
Step 07: Turn over, layout and mill about 1/8" away from the layout line as shown.

05/29/21
Step 08: Use a boring bar with a radius cutter, tuned inward in my boring head to cut the radius on the retainer clip.

05/29/21
Step 09: The Clip

05/20/21
Step 10: The Knob Assembly.

05/29/21
Alteration 22 Page 02
22.01 22.02 22.03 22.04              
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