1. I like it! Once I plugged some numbers in, it started to talk to me and made sense.

2. 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.

3. ## Pattern maker

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

4. Originally Posted by cc flash
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?
Yes. Java Runtime.

5. Great program. Took a little time to figure it out but i am going to use it for the next tarp i make.

6. Going to play with this a bit to see how it works. Looks very promising. Thanks!

7. 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 but they are hopefully going to cover two hammocks, right????

8. 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).

9. Originally Posted by equiquay
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?

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" wide

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.

10. 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!