The Thrifty Rocketeer blog continues….
Normally, this blog tries to give you some helpful, constructive tips.
But at present, we will look at a couple of things To not attempt.
Just tonight, I used to be chatting with some rocketry buddies by Zoom, and one of the extra senior guys holds up a couple of pieces destined for his high energy rocket. He’s asking for help and recommendation on how you can proceed.
He’s obtained a medium sized carabiner in his right hand, and in his left is a strip of what he is calling an elastic band. When you have any kind of concerns relating to wherever and also how to work with jacquard elastic webbing cheap, you possibly can call us in our own internet site. (It seems extra just like the headband that Spock wears in Star Trek IV: The Voyage Home, however irrespective of.)
It’s a long length or skein of two inch wide elastic band that appears like it’d either go in a truss, a bra, or some form of back brace.
And he’s asking, “How do I attach this to that?”
The dialogue starts and rules out sewing (cause the stitches will not stretch), rivets (trigger they’ll pop each time it stretches), grommets (for a similar purpose) and glue, (because it won’t “give” with out cracking).
One rocketeer stated, “Dump it, just get a nylon rope or comparable woven tube, and tie it on”, just as you’ll in mountain climbing.
We all pretty much agreed that the two inch width of the elastic band won’t allow for a tight knot to be tied across the carabiner, so we settle on the nylon tube/rope concept.
Now this started me pondering concerning the time that I thought of making my very own shock cord out of elastic. I was doing a scratch construct for a recycling show on how you could possibly flip strange trash right into a very simple rocket and nosecone with plastic Wal-Mart bag parachute. For a shock cord, I had settled upon an outdated pair of males’s tighty-whitey briefs.
I convinced my spouse 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 just minimize as close to the waist band as I could.
Now that I had the loop of elastic free, I don’t recall if I cut throughout the appear or ripped it free, however I wound up with a single size of one inch broad elastic that nonetheless had numerous stretch in it.
Deciding that the band was too vast, I took the fabric sheers and reduce 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 two elastic strips, while about 42 inches long, curled and buckled, refusing to put flat.
This was symptomatic of how the elastic band would behave regardless of how I lower it , stretched it, or steam pressed it. I realized that you just Can’t lower an elastic band lengthwise had have it work. (Now, for the needs of my poster board show of the components of a rocket, it labored properly sufficient, however for really use in a rocket, my concept wouldn’t have worked.)
What WOULD work is the purchase of about 3 feet of slender 1/8-1/four inch elastic from Joann Fabrics or comparable store. Aside from the run on this materials to make masks through the pandemic, this could work for smaller, low-energy rockets for those who wanted to replace a shock cord.
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