spursnutter Posted August 7, 2008 Share Posted August 7, 2008 I have been trying for ages to make a domed cap for a bollard and can only think of using the loft tool but it doesn;t work. What am I doing wrong? The base diameter is 141.3mm and I want to creat a nice dome that is 10mm in height. Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 Circular or semi-elliptical? Either way, loft wouldn't be my first choice. If circular have you considered using Revsurf? Quote Link to comment Share on other sites More sharing options...
spursnutter Posted August 7, 2008 Author Share Posted August 7, 2008 whats revsurf? Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 Revsurf, also known as a Revolved Surface, is used to create a complex surfaces by revolving a shape about an axis. Example: revolve an arc 360 deg to form a lamp shade. Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 Other commands for creating surfaces include Tabsurf, Edgesurf and Rulesurf. I think you can also use Sweep. If you Sweep an open curve along a path, the result is a surface. Quote Link to comment Share on other sites More sharing options...
spursnutter Posted August 7, 2008 Author Share Posted August 7, 2008 as you can see from the attached the edges are faceted who do you do it so it is circular. How would i draw it? 0685 AP Extra Bollards.DWG Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 You're not satisfied with the results? Did you want it to look for like a half of a sphere? Quote Link to comment Share on other sites More sharing options...
spursnutter Posted August 7, 2008 Author Share Posted August 7, 2008 yes, it has to sit on top of a 141.3 Dia Tubes then welded and polished Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 Is this what you're looking for? Domed bollard.dwg Quote Link to comment Share on other sites More sharing options...
spursnutter Posted August 7, 2008 Author Share Posted August 7, 2008 I need it at the height i had on mine but i want to do away with the jagged edges it could do with it being done out 2mm steel press into a dome Quote Link to comment Share on other sites More sharing options...
ReMark Posted August 7, 2008 Share Posted August 7, 2008 I doubt anyone will see the "jagged edges". Mesh density for a surface can be controlled using the variables Surftab1 and Surftab2. The default values for both are set at 6. Surftab1 controls the number of mesh columns while Surftab2 controls the number of mesh rows. By the way, on your example it looks like you revolved a full arc (from quadrant to quadrant on the circle). You could have used just one half of that arc. No matter I suppose as long as it gives you the intended results. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted August 7, 2008 Share Posted August 7, 2008 whats revsurf? Forget revsurf, Tabsurf, Edgesurf and Rulesurf. Those are obsolete commands. Here is your part as a 2mm pressed plate solid. Add the weld bead and polish. You might want to go through the tutorials in my signature. Domed bollard.zip Quote Link to comment Share on other sites More sharing options...
spursnutter Posted August 7, 2008 Author Share Posted August 7, 2008 Forget revsurf, Tabsurf, Edgesurf and Rulesurf. Those are obsolete commands. Here is your part as a 2mm pressed plate solid. Add the weld bead and polish. You might want to go through the tutorials in my signature. Can you explain as to how you did it. I am grateful that you have done it for me but I would like to know for future reference. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted August 7, 2008 Share Posted August 7, 2008 Can you explain as to how you did it. I am grateful that you have done it for me but I would like to know for future reference. Did you do the tutorials I suggested? Quote Link to comment Share on other sites More sharing options...
hazardman Posted August 8, 2008 Share Posted August 8, 2008 i would have simply drawn half of the bollard in section, turn it into a pline, then use the revolve command...and if the sections is closed it will be a solid...if open, it will be a mesh... Quote Link to comment Share on other sites More sharing options...
tzframpton Posted August 9, 2008 Share Posted August 9, 2008 Forget revsurf, Tabsurf, Edgesurf and Rulesurf. Those are obsolete commands. http://www.cadtutor.net/forum/showthread.php?t=8121 Grotey didn't have a problem using AutoCAD 2004 with these same commands that you say are "obsolete". Quote Link to comment Share on other sites More sharing options...
Cad64 Posted August 11, 2008 Share Posted August 11, 2008 Thread has been cleaned up. Lets please remember to be tolerant and respectful of each other. Quote Link to comment Share on other sites More sharing options...
khama Posted August 13, 2008 Share Posted August 13, 2008 i don't know but it looks pretty circular to me. All I did was set the facetres to a value of 10, shaded it, and it all looks good to me. try reinstating the profile after setting your surftab1 and surftab2 to = 25. This will smooth the facets further but take more memory. You can also polyedit and select smooth to smooth it further. Quote Link to comment Share on other sites More sharing options...
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