Estes USS Enterprise #1275, Part 5, Cutting Out The Vacu-form Parts

I saved the large hull disks for last. 

As before, trace around the edges with a ball point pen.

Score along the pen lines.

Free up the edges for easier bending and cracking by cutting relief segment lines.

Sand the disk edges with a block.

The right side picture shows the upper and lower primary hull halves dry fitted. Note the overlap of the top half.