Do you mean by using a 3D-Surface operation? (As suggested by Russel also.)
In the above example I used a 3D-Pocket operation, and I cannot find the parameters you mentioning about.
Do you mean by using a 3D-Surface operation? (As suggested by Russel also.)
Cool!
I don't know how many of these you want to manufacture but you can get you a tool bit made. I see you are in Munich. Just google for 'Fräser nach Zeichnung' or something similar.Giulio Buccini wrote: ↑Fri May 13, 2022 1:10 pmCool!
I was thinking about that one minute ago... you're perfectly right. This could be a smart approach!
Maybe a TiSin coated ball-mill could do the job on alu with low effort (I do not have a lubricating system yet).
UPDATE:
I would add some tolerance (0.1 mm) to the nominal diameter of 12 mm (i.e. 12.1 mm). This could be a problem because it is almost impossible to find a ball-mill with such specific diameter.
As workaround I could make some additional passes to enlarge the semicircle, but the obtained geometry would be not really circular... hmmmm.... (I'm scraping my head).
The original file of yours I downloaded was for a 3D Surface. ( mill_test )Giulio Buccini wrote: ↑Fri May 13, 2022 1:04 pmDo you mean by using a 3D-Surface operation? (As suggested by Russel also.)
In the above example I used a 3D-Pocket operation, and I cannot find the parameters you mentioning about.
Attached is a copy of your original file with the suggested modifications for both 8mm and 3mm ball endmills.Giulio Buccini wrote: ↑Fri May 13, 2022 10:35 pm I explored the solution proposed by bmsaus4ax and Russel (i.e. a 3D surface operation), unfortunately they have both the same defect: the use of a ball nose bit like... a drill.
.
So the 3D surface is a no-go option for me.
So it seems that Path does not offer any chance to "enter" into the material from the side...
The additional passes should do the trick. Shifting down is easy, just adjust the 'Final Depth' accordingly. For the passes left and right I am not aware of a solution in FreeCAD. I would just edit the trajectories into my gcode manually. If you need help with that, I'm happy to assist.Giulio Buccini wrote: ↑Fri May 13, 2022 2:03 pm Maybe I can simply make three additional passes shifting down/left/right the toolpath of 0.05 mm (i.e. half tenth)?
Yeah, I will not get a perfect circular path, but I think I will obtain a good clamping force over a 12mm pipe in any case... or not?
I plan to make a couple of hundreds of this little boy.
I have already explored that option while playing with 3D-Surface params.bmsaus4ax wrote: ↑Sat May 14, 2022 12:38 amIf you want to approach the side with less than half of the cutter just increase the Boundary Adjustment, this will move the cutter and give initial paths using the radius edge of the ball. ( or turn Boundary Enforcement off and enter from the full radius outside the shape )