salf Posted November 23, 2003 Share Posted November 23, 2003 Ok, im making an "spiral stair", and now i need to make the railings for that stair, which of course are also a spiral, and a rounded edge shape...how to do that with AutoCAD? Link to comment Share on other sites More sharing options...
Bishop Posted November 23, 2003 Share Posted November 23, 2003 Been trying to do that for the longest time. Haven't figured out how to draw a helix in Autocad yet. Only one I have ever seen is a series of short PLines that forms the spiral. Might be an imported file, or the guy spent a sh#t load of time drawing it manually. Hope we get a reply for this. Link to comment Share on other sites More sharing options...
Ernest Burden III Posted November 23, 2003 Share Posted November 23, 2003 Ok, im making an "spiral stair", and now i need to make the railings for that stair...Do you have an example, or can post a planview? How detailed are you trying to make this stair? Link to comment Share on other sites More sharing options...
vizwhiz Posted November 23, 2003 Share Posted November 23, 2003 hi There salf, here is a Link to a Google search result for "spiral.lsp" which will draw a 3d spiral i guess you would need to extrude a circle along This Path to create a 3d solid http://www.google.com/search?sourceid=navclient&q=spiral%2Elsp **** Try using Google search engine for anything or everything, it is amazing Tool to get used to Thanks Randy Link to comment Share on other sites More sharing options...
Ras Posted November 23, 2003 Share Posted November 23, 2003 Alright - good solution - the lisp thing... I just tried if I could do it manually and ran into some problems Iv´e encountered before but have been able to work around it: ACad wil not extrude along a 3d spline and will not extrude along a splined 3d-poly and also an extrusion along a non-splined 3dpoly is of course not smooth. I Use ADT so the railing is not a problem but how do you do a smooth 3D extrusion anyway? I haven´t solved the spline to polyline problem - any tips? Link to comment Share on other sites More sharing options...
CAD Posted November 23, 2003 Share Posted November 23, 2003 i don't know but, have you seen some of ACAD's sample dwgs? (they're included upon installation) Under the samples folder, you'll find the"R300-20.dwg" file. In it is a mechanical drawing that has a spring. I believe who ever made it didn't use any lisp commands. I tried it myself using series of arcs and i eventualy did it, but it did took me some time though. Anyways, using lisps maybe the best idea since we need things done the quickest way. Goodluck cya Link to comment Share on other sites More sharing options...
salf Posted November 24, 2003 Author Share Posted November 24, 2003 thanks alot guys, for the help! I did try a search before asking help in here, and it didnt work for the following reasons: 1- I used the terms "spirals", "autocad", "how to" or "tutorials", and of all the millions of links the first 10 or so wasnt what i was looking for. 2- I didnt used the extension .lsp, because i have no idea what a .lsp is....im gionna find out now when i get home to practice that. Once again, thanks. Link to comment Share on other sites More sharing options...
STRAT Posted November 24, 2003 Share Posted November 24, 2003 have you got viz? Link to comment Share on other sites More sharing options...
salf Posted November 24, 2003 Author Share Posted November 24, 2003 me? yes i have VIZ... But i odnt use to model...dunno how hehehe...but ive seen some tutorials out there and it appears to be easy to model this kinda figure with VIZ....so maybe im gonna pratice some modelling with it. Link to comment Share on other sites More sharing options...
G Posted November 24, 2003 Share Posted November 24, 2003 check out the following link. The resident LISP guru is fantastic. hes done some amazing stuff in autocad,well worth a look. G http://www.cadtutorforum.net/forum/viewtopic.php?t=386&highlight=helix Link to comment Share on other sites More sharing options...
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