Estes Orbital Transport, Kit #K-42, Part 8, Launch Lugs & Standoffs

Two launch lugs are cut to 5/8" long.

I usually sands the ends flat and square with 400 grit on a block.
The Mylar skin usually rolls over on the inside. Pick it out with the tip of your knife and sand it off.

Reform the inside of the lug with a sharpened pencil or dowel. Turn the dowel in the direction of the seam wrap so it doesn't unravel.

The right side picture shows the dressed lug end.

I cut the dowel standoffs a bit long and glued them to the lugs.
The long standoffs are sanded to the length of the launch lug.

There really isn't a need for the dowel standoffs. In 1969 Estes might have thought it would be a better match for their C-Rails.

The end of the engine mount tube extends 1/2" out the back of the main body tube. The seam was filled and sanded. Filler/primer followed with sanding to surface.

The engine mount was glued into the main tube.
TIP: Notice the 1/2" mark is extended all the way around the tube. When gluing the mount you are working against the clock, before the glue starts to set up. With the 1/2" line drawn all the way around you won't be searching for a short pencil line.