in "Splinter Cell: Blacklist", Vic gave Sam a Karambit for a gift. This model is based on the illustration of that karambit. original model traced on ColdSteel Tiger karambit, and modified to resemble the game's one. It has sharp edges along with wire cutter inside the serration. Handle part is well-filleted for comfort grip.Size is based on my hand - standard male Asian - whose palm width is just the size of the keypad. if you have big hand, then try multiplying the size! it has very sharp edges which needs to be supported, place the serration along with x axis to get the best result. in order to get clean, parallel aligned layers, place it parallel to the print bed. however, as this model has wide flat surfaces, getting rid of the supports would be hard. print it as tilted, around 15~30 degree.