The 6’5" boards have been the closest to the file while the 7’1" boards have been off the most. The outline has been consistently good, but the foil for the front half is often thinner than the file is programmed. More often than not the nose and entry rocker is off, and the tail rocker is pretty close. I’ve had 7’1", 6’5" and 6’2" boards cut using the aku program on aps3000 machines. I’ve been using the Aku software on and off for some time now and I haven’t been able to get consistant results. Sometimes blanks are tilted or shifted to fit the design, and this causes complications when it comes to figuring out how to flip the blank and cut the other side. You might find out what blanks are used and how your design fits into the blank. The best boards I had cut commercially were cut across the Y axis instead of along the X. Sometimes the problem is the blank flexing away from the cutting head because of the direction of cut (power or climb cutting) or related to the speed of passes. Depending on how the machine is set up (blank support, cutting speed, cutting head, etc.) the blank is likely to respond differently. It is more likely that the flexible material is the problem. Surf CNC machines are in the main built pretty lighly and this leaves some room for flexing during cutting.I don’t know what the specs are for the AKU, but I have no doubt that they are within industry standard, so this is an unlikely source of error. There is an adage that says, “no need for a stiff machine when cutting flexible materials”. Having recently finished building a CNC machine, I’m going through
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