Semroc Sam 3 Build, Part 4, Small Forward Fins

The small, upper fins are made up of three pieces. I cut new forward strakes from basswood, the large middle piece is the kit supplied 3/32" balsa, the upper antenna was also cut from  basswood.

The older Centuri instructions have you glue the individual pieces together on the model. The new Semroc instructions have you assemble the three pieces off the model then glue onto the body tube.

Set and glue them together in a line on a straightedge.

Here's all four fins, the flat sides were sanded with 400 grit on a block.






CWF is brushed on and sanded off.

The fins will get a good shot of filler/primer and more sanding before gluing onto the upper body tube.