Hey, I am trying to create a fixture for a part that I am machining, I can make a boolean subtraction to get the mold design, however I am wondering how I should go about adding 0.5mm clearance all the way around, too allow for some tolerance. Is there a way to scale my model by 0.5mm then make a boolean subtraction or is there a more efficient way to do it ?
Extractsrf on the spherical surface(s) you have inside there, with copy = yes.
Then OffsetSrf by your 0.5 mm amount. If your spherical isn’t quite perpendicular to the top surface of the blue fixture, then you can ExtendSrf to make it intersect, then OffsetSrf if it is just clearance.
Usually when I’m creating stock and various offsets, I will use the ‘bounding box’ tool and ‘move face’ tool.
If you wanted to use the ‘scale’ tool, you’d have to calculate the factor or percentage to obtain the increment amount you want to end up with, and also have to determine the scale reference origin point.