You might try:
3D CAFE --
a more direct link would be:
you will see a file named "heart01.zip"
Not sure how much this will help you -- because you will run into the = same limitation with the 3DS file format - -even if you get it into DXF = or IGES it is only wireframe -- you will still need some rev enginerring = software like raindrop or Rapidform. It is possible to get an = evaluation of rapid form --> however you will have to put up with a = salesman calling you asking when your ready to buy. If your not willing = to spend $75 then you will definately not want to pay well over 6 or =
I have had some luck by downloading a Rhino trial & using the = surface drape function -- this will simulate laying a cloth other the = wireframe. Then exporting thoes surfaces to solidworks or pro e & using = your cut with surface command after putting a solid cube through the = surfaces. only limitation here is that you will loose fine detail & = through holes will not be fully through, but only dip down into the = hole. Plus you will need to use the drape from the three primary views = & possibly even more & then export each surface in order to get all of = the shapes.
other than that -- you might as well pay the 75.00
Hope that helps! Steve Tietz