Baking Soda and Vinegar Rocket!

prusaprinters

<figure class="media"><oembed url="https://youtu.be/gKwsiry1aVU"></oembed></figure><p>For this rocket you will need these plastic <a href="https://www.amazon.com/dp/B076MLFNJ6/ref=cm_sw_em_r_mt_dp_S4W08RE7PJ9827Q3VQ">test tubes</a>. &nbsp;Unfortunately you can't buy them in lesser numbers than 48, but the price is easy to accept.&nbsp;</p><p>There are a number of different fin and nose cone options. This is largely because printing in TPU versus PLA for the fins and nose cones can introduce printing problems.&nbsp;</p><p>You WILL have to print the plug in TPU as it needs to be able to flex a little to make the solid seal required to make the rocket POP! &nbsp;We originally used the <a href="https://www.amazon.com/gp/product/B081ZT6XKD/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;psc=1">YOYI 3D Printer Filament,85A TPU Filament</a> but this filament seems to be hard to get now, especially in California. &nbsp; But we've had success using the<a href="https://www.amazon.com/gp/product/B01LVWK4L3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&amp;th=1"> Hatchbox TPU</a>.&nbsp;</p><p>There isn't really an advantage to the 3 over 4 fin rockets, it's more . aesthetics, the 4 fins make it looks more like the Estes Big Bertha. &nbsp;</p><p>Depending on your printer and TPU, &nbsp;there are a number of model options to try.&nbsp;</p>