Source the whole build.

Print the matching PDF at 100% / actual size; check the 50 mm scale bar. Cut the two wing halves, tailplane and fin. Join the 5 mm root overlap before forming the wing. Use the preparation steps below.

Measure outside diameter with calipers and dry-fit all three fittings. If the stock differs, change the straw diameter in Studio and save a new revision before printing. Material stiffness and mass also need checking.

Before building: The linked paper tube matches nominal dimensions only. Its mass, stiffness and fit have not been tested on this design. A tested retail boom is still needed.

Tape the paper joints and attachments. Any later trim must be measured and positively retained; include tape and trim in assembled mass.

Before building: Trim material, quantity and location require a balance study; no trim purchase is specified yet.

Use the exact spool's profile and inspect the slice. A printed fitting still needs dimensional and joint checks with the selected stock.

Use the actual installed plate and nozzle. A P1S purchase is unnecessary if you already have compatible printer access; AMS is not required.

Measure supplied stock and printed interfaces; instrument resolution is not an accuracy guarantee.

Use the guide's named datum; a measurement from the nose cap is different from one from the straw end.

Check scale accuracy with a suitable reference and include measurement uncertainty. Weigh the complete assembly, not only printed parts.

Keep paper cuts clean and straw ends square without crushing the tube.

Use the supplied PDF, turn off fit-to-page, and check the scale bar. A print shop can provide this without purchasing a printer.

Before building: Printing service depends on your location; no service is connected.

The kit includes balloons, gas and ribbon. Measure the actual additional lift with the intended airborne line; balloon size or a listing does not establish lift.

Before building: Balloon size and required lift are not fixed by the recipe. Confirm sufficient measured lift in Studio before export.

Thread the printed eyelets, suspend the tray, and keep the model tethered indoors. The ground anchor stays on the table, not on the aircraft.

Before building: Line lengths, joint retention and required anchor mass need a measured setup check. A 150 g candidate anchor is not a validated requirement.

Choose ballast only after measuring available lift and complete added mass; secure it in the tray against falling out.

Before building: No reviewed ballast product or amount yet; tray fit and retention must be established.

Record installed tape in the added mass budget; do not double-count items already in the lift measurement.

Use the exact spool's profile and inspect the slice. A printed fitting still needs dimensional and joint checks with the selected stock.

Use the actual installed plate and nozzle. A P1S purchase is unnecessary if you already have compatible printer access; AMS is not required.

Measure supplied stock and printed interfaces; instrument resolution is not an accuracy guarantee.

Use the guide's named datum; a measurement from the nose cap is different from one from the straw end.

Check scale accuracy with a suitable reference and include measurement uncertainty. Weigh the complete assembly, not only printed parts.

Keep paper cuts clean and straw ends square without crushing the tube.

Mark each cut after dry assembly; allow for cutting loss. Compact (2 × 440 mm) and standard (2 × 490 mm) can use one 1 m tube only if the verified cuts and cutting loss fit. Extended (2 × 540 mm) requires two 1 m tubes. Legacy recipes use their listed cut lengths.

Before building: Tube tolerances, printed sleeve fit and joint strength need coupon checks.

One 1 m stock length can supply the nominal 560 mm boom. Check actual stock, fit and stiffness before cutting.

Before building: The recipe specifies outside diameter but not wall thickness. The linked 6 × 5 mm tube is a candidate, not an approved structural selection.

A single 1 m rod can supply this 380 mm piece and the separate 160 mm fin piece, allowing cutting loss.

Before building: Check actual diameter, printed fit and joint strength.

Cut from the same 1 m stock as the tail rod after dry fitting; do not buy a second rod just for this row.

Before building: Check actual diameter, printed fit and joint strength.

Test adhesion on the actual carbon, PLA and LW-PLA coupons before bonding the assembly.

Before building: No adhesive and bond process have been qualified. A generic glue link would imply compatibility we have not established.

Tape alone is not a validated flight joint. Secure ballast through the carrier; select its mass only after the balance study.

Before building: Final retention system and ballast remain unestablished.

Select 1.75 mm stock and calibrate the exact manufacturer's temperature/flow process. Standard PLA is not a substitute for the shell material.

Before building: No calibrated profile or effective density is established for this design.

Use the exact spool's profile and inspect the slice. A printed fitting still needs dimensional and joint checks with the selected stock.

Use the actual installed plate and nozzle. A P1S purchase is unnecessary if you already have compatible printer access; AMS is not required.

Measure supplied stock and printed interfaces; instrument resolution is not an accuracy guarantee.

Use the guide's named datum; a measurement from the nose cap is different from one from the straw end.

Check scale accuracy with a suitable reference and include measurement uncertainty. Weigh the complete assembly, not only printed parts.

Use the supplier's cutting and dust-control instructions; do not use paper scissors for carbon stock.

Before building: A complete cutting/tool procedure has not been selected for this kit.