Mastercam uses the Parasolid Kernel from UG so from that standpoint it is GIGO. As far as the drafting - are you looking at creating detail drawings or just interested in wireframe. If detail drawings - then you may find it a little weak, if you are looking only to created wireframe process models, then MC is the greatest! MfgEng

I'm no Bullines but try to up your allocations under screen configure... May be currently limited to around 40MB. MfgEng

How dimensionally stable is ABS? UHMW will creep over time and from this experience, I now let parts sit between roughing and finishing operations. If there are features that allow, I love to bolt parts thru themselves. This keeps any distortion from clamping to an absolute minimum. MfgEng

Greg Depending on the production quantities - go PCD tools all the way! Coolant thru PCD tipped "G" drills with high polished flutes. Kennametal has their TX line of Solid Carbide drills and also check HAM Precision - out of Germany - They make some nice tools. For Milling - Clapp and Haney PCD facemills Niagara Cutter A331 HSS Endmill w/.003" cylindrical land ground along the margins for added stability. For Turning - Kenna and Sandvik now have great grades and Geometry for Aluminum. Also look for Rouse and Iscar High Positive tools. What type of material - DieCast, FineBlanked, Rolled, Cast?? The parent material will affect anything you try to do. Good Luck