blood86x Posted January 28, 2007 Posted January 28, 2007 Alright, I'm trying to make a section of ductwork that is a transition from 12x8 square to 8 dia round. I've tried all kinds of methods, but nothing has really gotten me an accurate, realistic model. Any insights? Quote
blood86x Posted January 28, 2007 Author Posted January 28, 2007 oh, and just for clarification (so I don't get laughed at ), I'm trying to do this in 3d. Quote
mdbdesign Posted January 28, 2007 Posted January 28, 2007 http://www.hvacware.net/pvfeature.html Try with demo. BTW it is ton of them, some very affordable Quote
NH3man! Posted January 29, 2007 Posted January 29, 2007 oh, and just for clarification (so I don't get laughed at ), I'm trying to do this in 3d. here is a quick one I did with rule surf. it is 12x8 to 8 round. I am sure one of the guys has a lisp proggy that will do it faster though. 12x8to8round.dxf Quote
yedan Posted January 29, 2007 Posted January 29, 2007 surely using 2007 you can use the loft command to do this? Quote
NH3man! Posted January 29, 2007 Posted January 29, 2007 surely using 2007 you can use the loft command to do this? 2007 does not play well with my video card in my machine here at home. Will give it a go at work though. I have tried the loft command only a couple of times and don't recall it being able to transition from rectangle to circle. Quote
yedan Posted January 29, 2007 Posted January 29, 2007 the loft command can be used for modelling the transition between many different shapes , you can start with a circle and end up with a 6 pointed star going through rectangular and triangular if you wanted, you have to use closed plines i believe, i dont think it wil work through regions Quote
Ronso Posted January 29, 2007 Posted January 29, 2007 The difficult portion of a square-to-round is the creation of the four cones that connect the square points to the round. Most often these cones are eccentric cones. At the following link, http://discussion.autodesk.com/thread.jspa?messageID=5466872, I display the methods I have used to create eccentric cones. It also shows some of the Transition shapes you can create once you master the eccentric cone. IMPORTANT: At the end of that discussion I provide the code necessary to create Solid Transitions of the common duct shapes. (look for the latest posted code). The code has now been tested on r14 thru A2K7. If you have any comments regarding the code, please reply to the link I provided above. Regards, Ronso A2k7 Quote
matramurena Posted January 29, 2007 Posted January 29, 2007 You can use the loft command for this. I drew 2 squares of 12x8 and 2 circles of 8 and then lined them on a path. (I use 2 so that you get straight ends) Next I made an offset of all of these forms of 0.2 and then I lofted the first series and after that the second series. So I had 2 of the ductworks, one of which a little bit smaller then the other.... This shapes I subtracted and what I got was the following picture... Quote
Mr T Posted January 29, 2007 Posted January 29, 2007 Great command LOFT, they pinched it from it's brother Inventor. Nick Quote
blood86x Posted January 29, 2007 Author Posted January 29, 2007 Thank you all very much for all of your advice. I don't really have much experience using the loft command, so I'll be sure to give it a go and then say how it worked out. One other side question: I'm going to apply a material to these ducts. I was wondering if there is a way to attach something that looks like duct seams and creases in the metal by using an image map and a bump map or something. Does anyone know where I could find some images to use? Or how would I go about making them, as I have next to no experience with bump mapping. Thanks again! Quote
blood86x Posted January 29, 2007 Author Posted January 29, 2007 Yep, works like a charm. Excellent. Thanks everyone! Anyone know how to make 24x24 ceiling diffusers as well? Quote
yedan Posted January 30, 2007 Posted January 30, 2007 as for bump mapping you can create seam looking lines on a square material map and use that applied to you model, with the correct mapping and placement of the lines you can make it look as tho it is seamed without actually needing a bump map as such, when i was creating skins for mapping space ship models for game modifications i always the Paint shop pro and using the bevel tools you can make a line have the appearance of a raised or lowered section which if done to a straight line would give the apparence of a joint line or seam Quote
tzframpton Posted January 30, 2007 Posted January 30, 2007 Yep, works like a charm. Excellent. Thanks everyone! Anyone know how to make 24x24 ceiling diffusers as well? you're just gonna have to dive right in man... pick up a book on 3D or something. that's the best way... or maybe look for a program called Autodesk Building Systems - it's a total 3D package for designing things like HVAC, Plumbing, and Piping - does everything for you, all you do is tell it what you want. Quote
Strix Posted August 14, 2007 Posted August 14, 2007 this was asked again this week - bookmarked for FAQ Quote
SLW210 Posted August 14, 2007 Posted August 14, 2007 this was asked again this week - bookmarked for FAQ How did you get this assignment Strix? Looks like you are doing a great job and working hard. Quote
Strix Posted August 14, 2007 Posted August 14, 2007 I think it was coz I spend WAY too much time loitering about the forum SLW Quote
smiley101 Posted September 24, 2012 Posted September 24, 2012 hello everyone. i am really new to all this especially the 3d parts and i am needed to draw some square to rounds that are tilted and kind of crazy really. just need to se if there is a site or something that can point me in the direction of step by step on this. Any help would be greatly appreciated! Quote
JD Mather Posted September 24, 2012 Posted September 24, 2012 Loft. Attach your attempt here. If you want to unfold it - you should be using Autodesk Inventor. Students can get Inventor free here http://www.autodesk.com/edcommunity Quote
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