Model Minutes Leduc 22 Build, Part 4, Centering Rings

The model uses 18mm C6-3 or 24mm D12-3 engines. The engine mount centering ring holes are cut to size.
The template has a dotted line to mark for the 24mm BT-50 sized rolled tube.





The instructions say to hang onto the centers. I never found out why.








Some 220 grit was wrapped around a finger and the center hole cleaned up.