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designing tents..measurements..etc...3d mockup

Posted: Sat Apr 18, 2009 8:35 pm
by realityguy
I'm finding out that one of the hardest things with tents is figuring out dimensions,what things look like before sewing the thing and working out any bugs that may come up.I think I've got the solution..Make a 3D mockup of the tent using forms and string for edges!
if you have flat walls or facets to the tent,then it's pretty simple for a mockup with all the exterior corner points marked.Dimensions can be taken right off the mockup for all the panels you need to make.For instance..here's a tent I hope to sew up this coming week(If I find the time):
Image
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Notice notations on the pictures..later I'll add dimensions to all the lines in the drawing for finished size references and to help me remember what I had planned where..I originally had the tent 6" higher at the midpoint but for my height I figured I could cut it down and save some weight,probably 10-15%.However..I did save the panel dimensions and pictures of the taller tent in case I feel I need them in the future. A mockup is nice to set your gear in(I set a pack and boots in the vestible for height clearances)to make sure everything works out as planned BEFORE cutting any material..and then finding out it's too late to change it...Just an idea.
I've thought about round and arched tent mockups..think you'd have to use fiberglass poles and domething to hold them arched in place..might be a real pain to do that..why I went with a facetted flat-panel design this first time.

Re: designing tents..measurements..etc...3d mockup

Posted: Sat Apr 18, 2009 9:04 pm
by irrationalsolutions
thats a real good idea. i think its a lot of trouble to go through but its a good idea and that way you get exactly what you want. good idea!

Re: designing tents..measurements..etc...3d mockup

Posted: Sat Apr 18, 2009 11:17 pm
by zelph
I agree, good idea. I don't like surprises :D Good rule of thumb is measure twice, cut once. Ripping out seams is no fun, I know all about that task :roll:

Re: designing tents..measurements..etc...3d mockup

Posted: Sat Apr 18, 2009 11:34 pm
by DarenN
that's a great system. it's used a lot in boat design. define drivers for the shape and extrapolate from there.

i'm building this one (PDF):

http://www.sixmoondesigns.com/ultraligh ... htWing.pdf

the only material i don't yet have is the canopy itself. i'd love to use the super-light-weight fabrics, like cuban, but i can't find it localy and i don't shop online.

Daren.......

Re: designing tents..measurements..etc...3d mockup

Posted: Sun Apr 19, 2009 1:50 am
by realityguy
Daren,You may want to try Seattle Fabrics....http://www.seattlefabrics.com/..You could drive down and check it out..order samples(then I could pick it up and ship it)..or whatever...
Check out their website..They have a HUGE selection and boat goods(Does Seattle have sailboats?!).You might want to call them also about something in particular.I think the only thing they don't have is glow-in-the-dark stuff(Cool reflective stuff!)..but I may be wrong there.. :lol:
They have all the fittings,zippers,and everything else.Nice selection.
I cut all the nylon pieces but the vent cover and the two large sides for the tent..gotta cut all the bug screen and those two pieces tomorrow..so far 11ounces of material...probably 3yards of mesh(=3oz) and the two long sides(about 12 ounces more).Same color mint green as my hammock canopy....
The center point is going to be a clip design to two trekking poles with a cross piece about 10" that will bolt across the trek poles...and a couple short pole pieces imbeded in the lower uprights.
That 6 moon design should be awful light..sure you can carry all that weight? :o

:lol:

Re: designing tents..measurements..etc...3d mockup

Posted: Sun Apr 19, 2009 11:27 am
by DarenN
the other thing about the UL fabrics is the cost! :o i'd need 9 yards of 1.3oz silnylon at 11.50 per yard = 103.50. i'm too cheap for that. ;) i might use a MEC Scout Tarp that i have and don't use. it was cheap. $35.

Re: designing tents..measurements..etc...3d mockup

Posted: Sun Apr 19, 2009 11:50 am
by realityguy
Seattle Fabrics is like walking into a candy store for tent/tarp makers.. :mrgreen: ..I have to wear blinders and only get what I went for.It is a good source for zipper stops(gotta get a couple next week),zippers,all pack hardware,d rings,buckles,or anything else required.They have several racks of floor to ceiling rolls of just about every color of outdoor type cloth..I didn't check for the cuben.
I did buy enough for the floor of my burrito tent but it was a closeout 4ounce waterproof oxford(added about 8 ounces for that tent or less).I figure I won't need to carry any additional footprint and it's practically puncture proof..and it was on sale at $4.50 a yard in a color to match the darker blue of the tent.Since the rest of the tent cost me about $10..I figured I could splurge and spend the $15... :lol:

Re: designing tents..measurements..etc...3d mockup

Posted: Tue Apr 21, 2009 2:32 pm
by zelph
Since the rest of the tent cost me about $10..I figured I could splurge and spend the $15...
That's good thinking, stimulate the economy ;)

Re: designing tents..measurements..etc...3d mockup

Posted: Tue Apr 21, 2009 4:07 pm
by hoz
CAD program?

Re: designing tents..measurements..etc...3d mockup

Posted: Tue Apr 21, 2009 5:20 pm
by irrationalsolutions
i can tell you from experience that cad programs are nice but they are no where near cheap. my step dad had my install two different ones on his computer so he could work at home and i saw the price tag on them. :o talk about sticker shock!