1,000th Blog Post! Semroc Baby Orion Build Part 15 Engine Mount Fix

The centering rings were too loose in the ST-10 body tube. I had to build up the diameter slightly.

I cut some strips from 110 lb. card stock.
Three were glued on and between the centering rings.
To make it easier to start in the tube, the front end of the overhanging card stock was bent down to the center for a ramp.




A test fit was done in the front of the ST-10 tube. The fit is much better.




Here's the mask for the black paint on the nozzle. A 13mm engine casing was slid inside to keep out the paint over spray.

Masking tape was set on the edges of the lower centering ring. Paper was wrapped around the forward end of the mount.