I cut out t' centerin' rings and glued up t' BT-5 tube arrays as shown here.

I found a scrap piece o' steel tube that I sharpened with a grinder, and punched out t' BT-5 holes. Begad! Later they would be sanded with sand paper glued around a dowel.

T' outside diameter o' t' Centerin' Rings were cut with scissors and stack sanded t' size.

I cut nine pieces o' BT-5 t' 4 inches long.

I marked t' BT-5s 1/2" and 1 inch from each end, and glued up these "BT-5 arrays" which became t' tube couplers.

I then joined t' main tubes by gluin' them together with t' BT-5 arrays. Ahoy! Use care t' roll t' main tubes on a flat surface t' keep them in alignment.

Most o' t' balsa stock that came in me box-o-parts was small bits, old die cut skeletons and miscellaneous bits, matey, so I thought that a mixture o' tube fins, ya bilge rat, balsa and tube tips would make a nice design.

I cut t' top tail rin' with t' patterns in t' pattern section.

I got two pre-cut fins that looked great as lower fins. Avast! Arrr! I attached 4 inch sections o' BT-5 tubin' t' t' fin tips and capped them off with some wood buttons that were rollin' around in t' bottom o' t' box-oparts.

T' top tail rin' is glued flush with t' aft o' t' BT55 usin' t' tube markin' guide included.

Next I glued an 18 inch piece o' BT-50 inside t' top tail rin' and along t' top mark on t' aft most BT-55

Attach two 6 inch BT-20 sections at t' junction o' t' lower fin/ body tube junction, shiver me timbers, flush with t' aft tube. I capped them with some larger wooden caps from t' ole-box-o-parts.

I glued up a 24mm engine mount for t' main, arrr, me hearties, central tube. Ahoy! I cut a BT-50 section, me hearties, 2 3/4 inches long, and glued a 20-50 Centerin' rin' flush in one end as an engine block.

I had a pair o' 50-55 centerin' rings that completed t' engine mount. Begad! One centerin' rin' is glued flush with t' engine block end, and t' second is 1/2 inch from t' aft end.

T' 24mm engine mount be glued into t' main tube, arrr, matey, matey, with t' aft rin' flush t' t' end o' t' tube.

I found some more pre cut fins, and attache them at t' junction o' t' top tail rin' and t' main BT-55.

I made up an 18mm engine mount for t' upper BT50 tube. Ya scallywag! I cut a 2 3/4 inch piece o' BT-20 and glued a BT-20 engine block flush into t' front end. I salvaged this long 20-50 centerin' rin' tube from a Estes Athena that was in me box. Arrr! Begad! I also used t' Athena nose cone on t' front o' t' upper tube.

Next I glued t' 18 mm engine mount into t' upper BT-50, me bucko, leavin' 1/2 inch hangin' out.

I glued 3 inch sections o' BT-20 onto t' tips o' t' upper fins for more stability.

I found a smaller version o' t' two precut upper fins that I used as t' top fin. Aye aye! I glued it on t' center line, ya bilge rat, flush with t' aft o' t' top tail rin' cut-out.

Next I cut two 2 1/4 inch sections o' BT-5. I cut t' aft o' t' tubes at a similar angle as t' upper tail rin' and glued them against t' top fin. Ahoy! I then inserted two .650 diameter wooden beads and 1/8 inch dowels as laser guns.

I did get a pingpong ball in me box-o-parts, shiver me timbers, and I HAD t' use it. I cut it t' fit on t' BT-50 and created a cannon pod. Avast, me proud beauty! It is glued 11 inches from t' aft o' t' main tube.

I wanted a canopy on t' nose cone. I found this triangular chunk o' balsa in t' box.

I made some angled cuts and sanded t' underside t' t' approximate radius or t' nose cone.

I attached t' canopy t' t' nose cone and two 1/8 inch x .680 long "guns" on 1/8 x 1/4 inch balsa cannon mounts.