sorry but the zalman heatsinks will not fit in a shuttle or other SFF cases. You would have to cut a hole in the side of the case to allow a bit of the heatspreader to come out.
No, you have to cut a hole in the side of the case or leave the case off. With all ZM80s this is the case. The ZM50s will fit however, but are no way big enough to cool top end cards; let alone an oven.. uhh i mean shuttle.
please dont, plasma cutters may be cool but a CNC beats them in terms of quality of cut and a waterjet beats a CNC. if your school has a CNC use that, or if it happens to have a waterjet, extremly unlikely, then use that.