fitzj Posted April 17, 2014 Share Posted April 17, 2014 I am new to Autocad 3d and trying to draw a Nut Head. I am trying to use the subtract tool but get the following message:- 2 selected surfaces were ignored. Surfaces cannot be subtracted from solids or regions. At least two solids, surfaces, or coplanar regions must be selected. When I setup the 6 sided polygon I used ucsicon and selected norigin. What am I doing wrong? Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 17, 2014 Share Posted April 17, 2014 It looks like you have constructed your nut head using a combination of surfaces and solids. I would expect you to be creating the nut head using all solids. Attach a copy of the nut head drawing to your next post. Someone here will take a look at it. You might want to check out pages 6-10 of this tutorial by forum member JD Mather too. http://home.pct.edu/~jmather/content/CAD238/AutoCAD%202007%20Tutorial%204.pdf Quote Link to comment Share on other sites More sharing options...
zaphod Posted April 17, 2014 Share Posted April 17, 2014 ReMarks never ending list of links always amazes me. Great information. Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 17, 2014 Share Posted April 17, 2014 I have a few. Quote Link to comment Share on other sites More sharing options...
fitzj Posted April 17, 2014 Author Share Posted April 17, 2014 This is the link to dwg. Many thanks. http://wikisend.com/download/929858/nut.dwg Quote Link to comment Share on other sites More sharing options...
ReMark Posted April 17, 2014 Share Posted April 17, 2014 Just like I said/thought; you used a combination of surfaces and a solid. Follow JDM's advice in the tutorial I provided a link to previously. Quote Link to comment Share on other sites More sharing options...
JD Mather Posted April 17, 2014 Share Posted April 17, 2014 Step 13 should read 45° or -45° depending on the orientation of your UCS - the key is to create an expanding cone in the correct direction. 13. Extrude*the*larger*circle*that*is*tangent*to*the*hexagon*with*a*taper*of*45°*(or*-45°)* beyond*the*length*of*the*nut. Other options would be to Revolve a closed Triangle and cut or intersect or Revolve an open line profile as a surface body and Slice with Surface option. So many ways.... Quote Link to comment Share on other sites More sharing options...
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