<p>I've used TinkerCAD (<a href="https://www.tinkercad.com/" rel="nofollow noreferrer">https://www.tinkercad.com/</a>) and was able to easily model objects for 3D printing, despite having no prior experience in 3D modeling.
However it needs to be connected to the internet to work, which is not always available at my location.
At minimum, I need an ability to create solid shapes and holes, and with resize, align and rotate options.</p>
<p>Is there an equivalent program that's free, with a similar intuitive interface as TinkerCAD, and works completely offline?</p>

[{'answer_id': 16023, 'author': 'Abel', 'author_id': 23523, 'author_profile': 'https://3dprinting.stackexchange.com/users/23523', 'pm_score': 1, 'selected': False, 'text': "<p>Cutting materials with a 'hot knife' isn't anything new.  There should be a fairly established toolset for working foam.  For 3D prints, I prefer to add coatings rather than modify surfaces with a hand held tool after.  I do run a drill bit through printed holes though.</p>\n"}, {'answer_id': 16024, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 2, 'selected': False, 'text': "<p>I have used a standard soldering iron to modify and fix 3D prints in the past. You have to keep some things in mind when doing so:</p>\n<ul>\n<li>Don't overheat your material. PLA can take a soldering iron of about 230\xa0°C before charring.</li>\n<li>Don't use a tip with solder, or you will get grey deposits in the plastic.</li>\n<li>Round tips or flat tips both work fine, but you want to not dump <em>too</em> much heat into the model or you start to deform the print as it needs to cool again.</li>\n<li>Using snippets from the end of the spool for soldering is a good way to recycle the &quot;waste&quot;.</li>\n</ul>\n"}]
['https://3dprinting.stackexchange.com/questions/16031', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/22067/']