Another Parametric Model Rocket Fin Alignment Tool

thingiverse

This is another customizable parametric fin alignment tool designed specifically for building model rockets that demand precision and customization. This version shines when working with larger rockets or those featuring through-the-tube mounted fins. Initially, I created this design without searching Thingiverse, only to be astonished by how similar it was to Justblair's (see http://www.thingiverse.com/thing:695599). Other than his one-piece structure and mine being multiple pieces, they share striking similarities, including the glue clearance arc. It appears that great minds truly think alike. After discovering his design, I initially considered not posting mine due to its similarity, but then realized there are specific cases where my design might excel and it prints faster. I am currently building an Estes Big Daddy, a rocket with a 3-inch diameter body tube and substantial through-the-tube fins. The large size makes Justblair's design difficult for me to print on my machine, and I believe my multi-part design is actually simpler for through-the-tube fins. On the other hand, his design appears more convenient and useful for fins glued directly to the outside of the rocket body, assuming the tool fits within the printer bed. To achieve optimal results, print at low infill (15%). You will need one copy for each fin on your rocket. Then use clothespins to hold it together while the glue dries, as shown in the photos. Be prepared for a bit of fiddliness getting everything aligned – ensure you have a minute or so to work before the glue sets. Dimensions can be entered in mm or inches. If you choose inches, a scale factor of 25.4x will be applied to all axes, making it compatible with most 3D printing software without needing adjustments. To keep things straightforward, simply avoid entering values like 1.230 – use 1.23 instead. The preset values in the file are tailored to work seamlessly for the Estes Big Daddy.