I don't know about Solidcam but for Cut2D there is a tab option on profile toolpaths in the newer version. Adding tabs to the toolpath in Cut2D is very easy and pretty much drag and drop on the vectors.
There are some other ways to achieve keeping the part in the blank and the 'onion skin' or 'foiled' option has worked for me on various materials. When cutting the profile of you part simply set your cutting depth about .015" short of the actual material thickness for wood(I have used this with redwood and poplar but not MDF yet) For materials like aluminum you can do the same thing only much less material can be left to hold the parts, and probably .002" to .005" should be enough to foil the part in the blank. It is fairly easy to break most of the foiled material from the part and usually not hard to finish cleaning up the edges.
There is another option that works very well with sheetmetal fabrication and I have seen it work well with aluminum and that is the machining version of a micro-joint on the corners of the part. For example on a square part make your profile vectors so that there are 4 separate toolpaths that cut within about .020" of each other at all four corners at the ends of the cutting toolpath. That small .020" to .030" wire tab will normally hold the part very well in the blank and it is easily cleaned up as there is only a small protrusion at each corner after breaking out of the blank.
You might be advised to try these methods on a small scrap part to see which one will work for you and you might have to modify the last option if needed to increase the wire joints or make them smaller.
I hope something here helps you out!