PARTS & EQUIPMENT · v 0.3
Roll 530
Printed fittings around a paper-towel body tube.
Cold-fit model. Not cleared for launch.
What you’ll print
Ordinary PLA airframe fittings and an experimental non-foaming ASA retainer. This design also requires the measured paper-towel tube, a commercial paper liner and a commercial paper motor-mount kit.
Use the part-specific material and orientation in the build guide. The list below also includes clearly marked samples and alternatives; printing every row is not the same as building one model.
Browse the printed parts list
| Part | Qty | Material | Use | Assembly note |
|---|---|---|---|---|
R01-One-piece-tail | 1 | ordinary PLA | Airframe part | ONE PIECE: rear sleeve and all three fins. Flat aft end DOWN; all fin bases start on the bed. Bond around the measured paper-towel tube. No separate fins, sockets or fin glue joints. Inspect vertical fin layers and flex-test the coupon. |
N01-Hollow-nose | 1 | ordinary PLA | Airframe part | Open shoulder DOWN. Bond N02 disk inside the rear bore with eye facing aft. Keep the sliding shoulder free of adhesive. |
N02-Recovery-eye-cap | 1 | ordinary PLA | Airframe part | Disk DOWN, eye UP. Bond disk inside nose rear bore, eye facing aft into paper liner; disk rear at 1 mm above shoulder rim. Adhesive compatibility and cord pull strength require physical testing. Roll uses a thicker solid disk as fixed forward mass. |
R04-Forward-lug-collar | 1 | ordinary PLA | Airframe part | Towel version only. Bond around towel tube; raises front lug to the rear collar radius. |
R05-Liner-centering-ring | 2 | ordinary PLA | Airframe part | PROVISIONAL dimensions. Flat ring DOWN. Bonds liner to towel body; it does not replace the commercial engine-mount rings. |
R06-Printed-forebody | 1 | ordinary PLA | Airframe part | 150 mm extension above the towel tube, vertical print. Bonds to two R07 centering rings on the continuous BT-60 liner. Gives recovery space and moves forward mass. |
R07-Forebody-centering-ring | 2 | ordinary PLA | Airframe part | Bond around continuous BT-60 liner inside printed forebody, one near each end. Ring is not a motor mount. |
L01-Launch-lug | 2 | ordinary PLA | Airframe part | Bore vertical as supplied. Align both lugs on the actual 4.763 mm launch rod before bonding. Check free sliding over entire rod. |
TEST-Body-ring | 1 | ordinary PLA | Fit sample / alternative | Fit over the actual measured paper-towel tube. No force fit. Full geometry must be regenerated if dimensions change. |
TEST-Nose-shoulder | 1 | ordinary PLA | Fit sample / alternative | Test sliding fit inside commercial liner. Nose must separate freely; do not compensate by crushing the tube. |
TEST-Integral-fin-root | 1 | ordinary PLA | Fit sample / alternative | Actual aft 35 mm section of ONE integrated fin and its curved sleeve/root fillet. Aft edge DOWN, same vertical layers as full tail. Check adhesion, layer bonding and flex before the complete tail. |
TEST-Launch-bore | 1 | ordinary PLA | Fit sample / alternative | Fit actual rod along full length; this is the production lug geometry. |
TEST-Towel-inner-ring | 1 | ordinary PLA | Fit sample / alternative | Provisional ring. Actual tube ID, OD, length and mass still required. |
M01-Threaded-retainer-base | 1 | ASA (non-foaming; experimental) | Airframe part | EXPERIMENTAL cold-fit prototype. Non-foaming ASA; thermal/load qualification pending. Print axis upright, aft end down. Bond around the measured paper motor tube after fit checks. Keep all threads free of adhesive. Custom 3.2 mm pitch; not compatible with purchased retainer caps. |
M02-Screw-on-retainer-cap | 1 | ASA (non-foaming; experimental) | Airframe part | EXPERIMENTAL cold-fit prototype. Non-foaming ASA; thermal/load qualification pending. Print retaining lip down and open threaded end up. Turn by fingers; its internal shoulder seats on M01. Rim overlaps the motor case, leaving the central exhaust opening clear. No metal hook. Check for loosening, thread damage and loss of motor capture. |
TEST-Mount-tube-fit-ring | 1 | ASA (non-foaming; experimental) | Fit sample / alternative | EXPERIMENTAL cold-fit prototype. Non-foaming ASA; thermal/load qualification pending. Test 25.10 mm bore on actual mount tube. Nominal 24.80 mm tube OD; regenerate from measurements. Do not rescale or force onto paper. |
No matching parts. Try a shorter term or include samples.
What you’ll need
Quantities apply to one model unless noted. Links identify the referenced item or specification; availability and substitutions need checking before purchase.
Airframe hardware
| Item | Qty | Specification | Selection status |
|---|---|---|---|
| Paper-towel tube | 1 | Measured lower tube 280 mm long; placeholder 43 mm ID /45 mm OD. User measurements are still missing. | Do not treat placeholders as actual tube dimensions |
| BT-60 commercial liner | 1 | Continuous 430 mm length; actual tube dimensions must be measured | Specified for fit checks |
| Estes D/E motor mount kit | 1 | 003159 configured for D-length motor in BT-60:paper mount tube, correct rings and forward thrust block. Printed M01/M02 replace hook/band in this experimental design. | Modification not manufacturer-approved |
Power system
| Item | Qty | Specification | Selection status |
|---|---|---|---|
| Commercial model rocket motor | 1 | 24 mm D12 family evaluation reference; nominal 70 mm case; modeled bore 24.00 mm. Keep commercial case intact. | Motor and delay not selected for launch |
| Manufacturer starter and plug | one per launch | Match the selected intact commercial motor instructions; not installed during cold-fit checks | Launch system not yet qualified |
Recovery and launch equipment
| Item | Qty | Specification | Selection status |
|---|---|---|---|
| Parachute | 1 | Suitable commercial parachute; 457 mm /18 inch is preliminary allowance only | Packing, descent and deployment unverified |
| Recovery shock cord / leader / attachments | 1 set | Compatible cord and leader; printed anchors and adhesive joints require tests; keep nose tethered | Specified for fit checks |
| Recovery protection | as required | Manufacturer-specified flame-resistant wadding or compatible protection | Specified for fit checks |
| Launch pad / blast deflector / controller | 1 set | Compatible electrical safety-interlock launch equipment with 3/16 inch (4.763 mm) rod. Align both lugs and check whole rod travel. | Rod length and exit-speed analysis pending |
Adhesives and supplies
| Item | Qty | Specification | Selection status |
|---|---|---|---|
| Adhesive | as fitted | Compatible printed-part adhesive; keep motor bore, threads and nose sliding surfaces free. Evaluate bonds on sacrificial coupons. | Specified for fit checks |
| Paper tube adhesive | as fitted | Appropriate tube glue per commercial component instructions; verify ASA/paper bonds | Specified for fit checks |
Check the revision included with your download before printing or ordering. Final fit, weight and operation depend on the actual materials and hardware you use.