The Thrifty Rocketeer blog continues....
Normally, this weblog tries to offer you some helpful, constructive ideas.
But at the moment, we'll take a look at a few things To not attempt.
Just tonight, I used to be chatting with some rocketry associates by Zoom, and one of the more senior guys holds up a couple of pieces destined for his excessive power rocket. He's asking for help and advice on find out how to proceed.
He's obtained a medium sized carabiner in his right hand, and in his left is a strip of what he is looking an elastic band. (It appears extra just like the headband that Spock wears in Star Trek IV: The Voyage Home, however regardless of.)
It's a long length or skein of two inch huge elastic band that appears like it would either go in a truss, a bra, or some type of back brace.
And he's asking, "How do I attach this to that?"
The discussion starts and rules out sewing (trigger the stitches won't stretch), rivets (trigger they will pop each time it stretches), grommets (for a similar motive) and glue, (because it will not "give" without cracking).
One rocketeer said, "Dump it, just get a nylon rope or related woven tube, and tie it on", simply as you'd in mountain climbing.
All of us just about agreed that the 2 inch width of the elastic band won't allow for a tight knot to be tied around the carabiner, so we settle on the nylon tube/rope idea.
Now this started me pondering concerning the time that I thought of making my own shock cord out of elastic. I used to be doing a scratch build for a recycling show on how you possibly can flip extraordinary trash into a quite simple rocket and nosecone with plastic Wal-Mart bag parachute. For a shock cord, I had settled upon an previous pair of men's tighty-whitey briefs.
I satisfied my spouse to lend me her pinking sheers, and i used a seam ripper to free the elastic band from the pair of shorts. If you have any queries relating to wherever and how to use jacquard elastic webbing; www.inventables.com,, you can contact us at the internet site. In a short time, I bored with the seam ripper, and went for a straight sharp pair of fabric sheers, and simply cut as near the waist band as I could.
Now that I had the loop of elastic free, I do not recall if I lower throughout the seem or ripped it free, but I wound up with a single size of one inch large elastic that nonetheless had a whole lot of stretch in it.
Deciding that the band was too vast, I took the fabric sheers and cut down the center of the band leaving an equal width of elastic band jacquard elastic webbing on both side of the minimize. What I hadn't counted upon was the fraying, which began immediately. The 2 elastic strips, while about 42 inches long, curled and buckled, refusing to lay flat.
This was symptomatic of how the elastic band would behave no matter how I reduce it , stretched it, or steam pressed it. I discovered that you Can't cut an elastic band lengthwise had have it work. (Now, woven elastic band for the purposes of my poster board display of the components of a rocket, it worked effectively enough, but for actually use in a rocket, my idea would not have worked.)
What WOULD work is the purchase of about three toes of slim 1/8-1/four inch elastic from Joann Fabrics or related store. Aside from the run on this material to make masks throughout the pandemic, this could work for smaller, low-power rockets if you happen to wanted to substitute a shock cord.