Sometimes Aspire isn't the best tool for the job, if you can model it easily with other software then your best bet might be to do that & then import it.
I tend to use a range of different software, don't personally believe that there is a one size fits all software from anyone & what works well in some programs doesn't work well in others
Having said that I am not very good at 3D modelling using any software so there may be a relatively easy way to do it with Aspire
