The Thrifty Rocketeer blog continues….
Normally, this weblog tries to offer you some useful, optimistic ideas.But as we speak, we will have a look at a couple of issues Not to try.
Just tonight, I was chatting with some rocketry mates by Zoom, and one of many extra senior guys holds up a few items destined for his high energy rocket. He’s asking for assist and advice on the right way to proceed.
He’s received a medium sized carabiner in his proper hand, and in his left is a strip of what he is calling an elastic band. (It appears to be like more just like the headband that Spock wears in Star Trek IV: The Voyage Home, but irrespective of.)
It’s a long length or skein of two inch broad elastic band that appears like it would either go in a truss, a bra, or some form of again brace.
And he’s asking, “How do I attach this to that?”
The discussion starts and guidelines out sewing (trigger the stitches will not stretch), rivets (trigger they’ll pop whenever it stretches), grommets (for a similar motive) and glue, (because it won’t “give” without cracking).
One rocketeer said, “Dump it, just get a nylon rope or comparable woven elastic band tube, and tie it on”, simply as you would in mountain climbing.
We all pretty much agreed that the two inch width of the elastic band will not enable for a tight knot to be tied across the carabiner, so we settle on the nylon tube/rope thought.
Now this began me thinking about the time that I thought-about making my very own shock cord out of elastic. I used to be doing a scratch build for a recycling show on how you could flip ordinary trash right 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 males’s tighty-whitey briefs.
I convinced my wife to lend me her pinking sheers, and that i used a seam ripper to free the elastic band from the pair of shorts. In a short time, I bored with the seam ripper, and went for a straight sharp pair of fabric sheers, and simply minimize as close to the waist band as I may.
Now that I had the loop of elastic free, I do not recall if I lower throughout the appear or ripped it free, but I wound up with a single length of 1 inch extensive elastic that still had plenty of stretch in it.
Deciding that the band was too large, I took the fabric sheers and cut down the center of the band leaving an equal width of elastic band on both aspect of the cut. What I hadn’t counted upon was the fraying, which started immediately. The 2 elastic strips, while about 42 inches long, curled and woven elastic band buckled, refusing to put flat.
This was symptomatic of how the elastic band would behave irrespective of how I cut it , stretched it, or steam pressed it. I learned that you Can’t reduce an elastic band lengthwise had have it work. (Now, for the purposes of my poster board display of the elements of a rocket, it worked properly sufficient, however for truly use in a rocket, my idea wouldn’t have worked.)
What WOULD work is the acquisition of about three toes of narrow 1/8-1/four inch elastic from Joann Fabrics or comparable shop. In the event you beloved this article and you desire to get more info relating to woven jacquard elastic band band (postheaven.net) i implore you to visit our own web page. Aside from the run on this material to make masks during the pandemic, this might work for smaller, low-power rockets in case you needed to replace a shock cord.
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