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January 22, 2018, 23:53:58 pm


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 11 
 on: Yesterday at 07:34:02 
Started by RickinBeachcrest - Last post by dh42
Hello

Quote
How did you move the Z 0 to the top of the object?

You can align the top of the 3D object with the align tool (transform/align)

(see at 1:10)
http://www.screencast.com/t/wUpHsU1bgGog

++
David

 12 
 on: Yesterday at 03:36:20 
Started by RickinBeachcrest - Last post by RickinBeachcrest
Again, thank you very much for modifying the CamBam file and the explanation.  Working with 3d has been a new learning experience for me.  It is a bit more complicated then 2.5d for sure.

One quick question, if I could impose on your generosity.  How did you move the Z 0 to the top of the object?  I move 2d objects all the time, but this 3d is another thing.

This is the 1st 3d CAM I have needed in the 2 or 3 years I have been using the CNC router. 

Thanks for the help.
Rick


 13 
 on: January 20, 2018, 21:13:29 pm 
Started by RickinBeachcrest - Last post by EddyCurrent
I think the toolpaths are created by that strange front edge of the surface combined with the Boundary Margin required to cut the back of the surface. In reality the surface is not ideal.

updated cb file attached.

1. top of surface = Z0
As you say, that is the most common configuration and the one I would use myself. Choice is mostly down to the nature of the stock. If you need a particular amount left at the bottom then zero to bottom of stock, this is ideal if you don't want to cut into the machine table, e.g. if you use a vacuum table.

2. a new Boundary Line (46) that helps with the surface front edge.

3. changing Boundary Margin to 0.27" will allow full depth cutting.

Using 3D CAD software to create that surface seems the best plan to me.

 14 
 on: January 20, 2018, 20:45:00 pm 
Started by jk - Last post by kvom
I tried this today.  A problem I had is that it sets the leadin feedrate as the cut feedrate rather than the spiral feedrate.  I am using a high cut feedrate based on the axial engagement (.1 * diameter) which is a fraction of the engagement during the leading.  The result was insufficient chip clearance.

I then remembered the leadin feedrate setting which solved the problem on the restart.

I suggest that if the leadin feedrate is 0 that the leadin should be the plunge feedrate for "safety".

 15 
 on: January 20, 2018, 18:29:06 pm 
Started by RickinBeachcrest - Last post by RickinBeachcrest
In an effort to learn a little more, I've got another question in regard to this topic.

What is creating the tool paths on the left of the object, when viewed from a YZ plane?

See attached pdf file.

I've also attached the CB file.

Also, I normally will put the Z 0 on the top of the stock when cutting 2.5d objects.  Is it normal to put the Z 0 on the bottom of the stock when cutting 3d?

Thanks for the assistance.
Rick


 16 
 on: January 20, 2018, 16:13:59 pm 
Started by Mikolaj123 - Last post by Mikolaj123
Hello ;
I have reinstalled once again and it is working.

Thank you

 17 
 on: January 20, 2018, 13:27:08 pm 
Started by jk - Last post by Dragonfly
I use it all the time and it's what you need. If you leave the spiral angle at zero the tool will enter very slowly using the full diameter of the initial circular pocket for ramping down, just like it does in a profile MOP. But it will take a lot of time if the diameter is large. Therefore it's better to set a small angle value depending on the DOC, tool and material.

 18 
 on: January 20, 2018, 13:14:00 pm 
Started by jk - Last post by kvom
I didn't know that worked with these, but I'll definitely use it next time.

 19 
 on: January 20, 2018, 13:00:48 pm 
Started by Bob La Londe - Last post by Dragonfly
I may be wrong but IMO CamBam has internally the methods and functions which can form more complex and flexible 3D MOPs.
I see many people had read the thread but no comments added. It would be interesting to see a discussion here and experience shared by others. Both about usage of CamBam and comparison to other programs/methods.

 20 
 on: January 20, 2018, 12:27:40 pm 
Started by Mikolaj123 - Last post by Mikolaj123
Thank you, but it seems that it has downloaded automatically.
Should I delete CAMBAM and reinstal once again ?


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