...
Spot drills are used by CAM Assist to create small chamfers around the edges of holes after drilling, with a single Z-axis movement. The chamfer may be present in the model, or not.
Despite what their name suggests, they are not used for spotting or piloting the holeSpot drills may be used by CAM Assist for the ‘spot drilling’ operation. CAM Assist assumes that if you use are using only high quality, self centering carbide drills, which do not require spotting you will not need ‘spot drilling’ in most scenarios.
It’s recommended to add 1 or 2 spot drills to your toolset (large and small) with a 90 degree tip angle. Then, create or rename one preset for each tool as follows:
...