Step 5: 3. Tube Marking

The fin marking guide found in the supplies for the Big Bertha rocket is a handy tool for aligning the fins.  The following steps detail how to mark the rocket body tube to prepare it for attaching the fins.

3.1. Cut out the Tube Marking Guide located on the Rocket Kit’s provided instruction Manual.

3.2. Tape the LL end of the Tube Marking Guide to one end of the rocket tube and wrap the guide around one side of the Body Tube. Finish by taping the FL side of the Tube Marking Guide to itself (this chosen end will be considered the bottom of the tube).

3.3. Place a mark with a pencil on both sides of each FL and LL line on the Body Tube.

3.4. Remove the Tube Marking Guide from the tube and extend all the lines by setting the tube in a right-angled channel (like a door frame), lining up the mark and sliding the pencil along the guide.

3.5. Put a small mark 4in from the bottom of the body tube on the LL line.
<p>please tell me , i can do it in my stem fair</p>
<p>is it gonna fly</p>
<p>is it gonna fly</p>
I remember making a model rocket when I was in Beginner Shop in Jr High, we made the tubes by wrapping Gummed Paper Tape, it worked very well. We made all the components in the shop and then went out to the field next to the school and fired them off, most of the rockets that the class made worked great, a few had some issues with flying straight. It was a learning experience that I really appreciated when I played with some of the Estes rockets later in life.
Cool! <br>I like the colors of the chute :) <br> <br>Also even as a non-rocketeer, i understood the basics and think i would be able to pull off a feat like this without too many fails in the process. <br>--&gt; Good 'ible! :)
GREAT job on this buddy...however, here are some tips...if you take the body tube, and place it in a smooth corner of say...a door frame or window frame, you can draw one line, and then standard common sense kicks in after one glues in the first stab fin. for thes stab's i have found superglue works wonders...3-5 coats will ensure the fins dont go anywhere... you can also sand than and make a lovely and fluid &quot;fairing&quot; joint. you can do the same with wood glue (which in my opinion works better as you are glueing 2 wood materials together, it will create a super bond) but the tradeoff is that you will have to wait for the glue to dry and cure...superglue is quicker, but its easy to make a mistake that could be potentially detramental to the FULL performance of the end product... <br> <br>as far as these kits are concerned, its hard to mess them up though. the real hazard which is agreeable is fire upon takeoff, but this is unlikely anyways. and even if it desintegrated upon t/o, it would end up sommersaulting in mid air safely from spectators as these are NOT high poweres rockets...it would be more of a concern if it was powered by anything bigger than an E motor. <br> <br>Overall though, lovely project!! i enjoyed working on it!

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