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I recently ordered some cuben fabric and was trying to find a pattern I liked for my tarp. So I created a simulation that provides an efficient fabric pattern for a given rectangular or hex, symmetric or asymmetric tarp. I wanted to share it with the community.
I've tested it pretty throughly, but if you find any bugs, let me know.
http://www.geogebratube.org/student/m4614
Thanks so much for sharing this. I'm scared of math and you're smart.
That's a neat project. Thanks for sharing.
Cool project. Thanks for sharing with HF. As I played with it for a few minutes, I could see how this would be very helpful as I plan out a couple of new tarps.
thats cool!
Awesome thanks for putting it out there.
Looking forward to showing this to me students. Very cool and simple to use.
I was having a hard time moving the points on the lower graph. I'm on a mac if that makes a difference. Am I supposed to click and drag or what?
Thanks, guys. :)
If it helps, you can think about it like creating a tarp in reverse. Normally you'd cut the fabric first and then arrange it into the design you want. This simulation allows you to pick the design you want first and it will produce the fabric pattern for you. The way to design the tarp is through cells B2, B3, B4, and B5 in the spreadsheet. With the exception of point O, none of the points in the diagram are dragable.Quote:
Originally Posted by lmoseley7
Cool looking but math is my down-fall......!:laugh:
A quant I ain't.
Fun to look at.
Shug
I like it! Once I plugged some numbers in, it started to talk to me and made sense. :scared:
I changed the simulation; hopefully to make it easier to use. Now you choose your tarp dimensions with the slider bars. If you don't like it this way, you can still edit cells B2, B3, B4, and B5 directly.
OK guys using fire fox opened Geogebra tube and get steps 1-6 , and a big open rectangle below that with nothing in it ???
Am I missing something?
Thanks
Mike
Yes. Java Runtime.Quote:
Originally Posted by cc flash
Great program. Took a little time to figure it out but i am going to use it for the next tarp i make.
Going to play with this a bit to see how it works. Looks very promising. Thanks!
Ok, if I read the calculator right I get the following:
A hex tarp with a 144" ridgeline and 120" sides and will require 244.5" of fabric. And I can make two out of 14.5 yds of fabric (522").
Yes, they will be huge :scared: but they are hopefully going to cover two hammocks, right????
Wow, that's big. A few comments:
How wide is the fabric you're using? If I use 54 inch fabric, I get 249 inches of length per tarp.
244.5 * 2 = 489. Why do you need 522 inches?
Keep in mind that by overlapping the patters, you could do with even less fabric. Visualize what 489 inches of fabric would look like with the two tarp patterns on it. There's a lot of empty space between the two. If you overlay seam JD of the first tarp with seam AG for the second tarp, you can shorten the fabric length by the length of segment MG.
You can find the length of segment MG by using the distance tool (under the angle tool).
Got it! I have available 522 inches. MG = 45 The fabric is 60" wideQuote:
Originally Posted by equiquay
I plan to use a total of 444 for the two tarps. (244.5 *2)-45 = 444
So it all will work out, AND I will have about 6 feet left over.
Hmm, something is still a little off for me. When I use tarpwidth=108, tarplength=108, ridgeline=144, fabwidth=60, I get a total fabric length of 236.12, and MG = 53.67. How large is your seam?
Maybe you found a bug somewhere. I'll keep trying to duplicate your results. If you don't mind, restart the simulation and see if you get the same results a second time.
Edit: Oops! Nevermind! I had my dimensions wrong. I see you're using 120 inch sides, not 108. My results match yours now. That's a big tarp you're making!
very awesome! thanks!
Now that is a cool tool. May take a bit of figurin' though...
Thanks for postingit for us.
I am considering changing my tarp size and shape and this tool is going to be a great help. Thank you for sharing with us.
I can't wait to use this when I make my tarp.
Thank you for posting this pattern. I have some chunks of silnylon that I plan on making a tarp with. Your pattern will be great when I figure it out. I have not used this type of pattern in many years. Right now, for me, this looks like a great puzzle, with a nice reward at the end. Thank you again.
I'm glad this thing will see some use besides my own. :)
If someone does use it to make a tarp, please post in this thread and let me know how it goes. I've triple-checked the simulation and think everything is fine, but it'll be good to hear of a real-world success.
I'll be using it for my own tarp, but I'll have to wait a few weeks before I can get started. I'll post the results when I do.
Ah-Ha! Thanks so much. Was hoping to find something like this. Tarp making is still a bit intimidating for me.