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🚀 Nail your rocket’s fins like a pro—because precision is the new cool!
The Estes 2231 Fin Alignment Guide is a precision tool designed for model rocket enthusiasts seeking flawless fin placement. Compatible with body tubes ranging from BT-20 to BT-80 and fin thicknesses of 3/32" or 1/8", it securely holds three or four fins made of balsa, basswood, or plywood. This accessory streamlines the building process by ensuring fast, accurate alignment, reducing errors and enhancing rocket performance. Backed by Estes’ decades-long STEM heritage and a 1-year warranty, it’s a must-have for serious hobbyists aiming for professional-grade results.











| ASIN | B004LGXCLI |
| Additional Features | Fast & accurate fin alignment, Suitable for three or four finned rockets |
| Age Range (Description) | Kid |
| Age Range Description | Kid |
| Art Craft Kit Type | Model Rocketry |
| Brand | Estes |
| Brand Name | Estes |
| Color | Assorted |
| Customer Reviews | 4.5 out of 5 stars 1,634 Reviews |
| Global Trade Identification Number | 00047776022317 |
| Included Components | SUPPLIES.SCIENCE EDUCATION.MODELS.ROCKETS/ACCESSORIES |
| Item Dimensions | 12 x 3 x 6 inches |
| Item Type Name | Model Rockets |
| Item Weight | 0.25 Pounds |
| Item dimensions L x W x H | 12 x 3 x 6 inches |
| Manufacturer | Estes |
| Manufacturer Part Number | 2231 |
| Material | Plastic |
| Material Type | Plastic |
| Model Name | Fin Alignment Guide |
| Model Number | 2231 |
| Number of Pieces | 1 |
| Seasons | All Seasons |
| Size | Medium |
| Subject Character | (-) |
| Theme | Model Rocket Kit |
| UPC | 047776022317 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Warranty Against Manufacturer Defects |
R**T
Great little tool that makes installing fins on rocket tube infinitely easier.
Cheap and effective. I wish I had this when I was a kid. 90% of the time when I had a problem with model rockets as a kid it was because of fin alignment, and this goes a long way towards eliminating that problem with model rocket kits that need balsa wood fins attached to a cardboard tube. I have built several kits with my son and have had no problem with fin alignment. You still have to be careful, but this eliminates the guessing and trying to line up measurements on a curved surface so everything is straight and spaced evenly.
R**D
Works well
Great product.
A**E
Works well to alaign fins.
Works well, helps grandson line up fins correctly.
C**D
a rocket builder's basic tool
Easy to use to insure that the fins are accurately placed.
K**S
worth it
I was unsure how useful it would be based on some of the reviews, but I tried i immediately today on a Big Bertha very successfully. the technique is basically to let one fin set up first and then attach the others. not perfect, but does what it says. recommended if you build a lot of rocket kits.
A**R
this device is a pain to use hard to keep center
It is harder to lineup fins with this device than to just to free hand it
C**C
A dad's best friend
Worked great to help align the fins and act as my 3rd and 4th hands
A**S
Works as described
Works as described
D**E
The four fin arrangement works great, but I seem to be on a 3 ...
I'd have given it a star or two more if one of the backets on the three fin arrangement wasn't loose. Causes these rockets to fly with bit of a wobble. The four fin arrangement works great, but I seem to be on a 3 fin kick.
A**E
Macht was es soll !
Viele Jahre habe ich die Flossen meiner Modellraketen mit Augenmaß und Flosse für Flosse angeklebt, was doch recht mühsam und Zeitaufwändig war. Jetzt geht es in einen rutscht. Ich habe das Teil auf ein Brett montiert was ein umkippen vermeidet. Die mitgelieferten Adapter passen gut bei normalen Flossen, ich habe mir noch eigene Adapter aus alten Motoren gebaut um noch flexibler zu sein, mittlerweile möchte ich das Teil nicht mehr missen.
Trustpilot
2 weeks ago
1 month ago