Visiting 3D carving

This forum is for general discussion regarding VCarve Pro

Visiting 3D carving

Postby scotttarnor » Wed Nov 13, 2019 4:13 am

Hello, I was attempting to set up a 3D carving this evening, The tutorial videos made it look fairly straight forward but I believe I am missing a step or two on the clean up of the final finish tool path , it looks a little rough to me. I have attached my file for assistance.

Thank You

Scott
Attachments
deer attempt.zip
(2.43 MiB) Downloaded 49 times
scotttarnor
 
Posts: 17
Joined: Fri Aug 30, 2019 11:40 pm
Model of CNC Machine: Pirnha LX

Re: Visiting 3D carving

Postby highpockets » Wed Nov 13, 2019 4:28 am

Use Ball Nose cutters and reduce the step over, especially on the finishing toolpath, try 8%
John
Maker of Chips
User avatar
highpockets
Vectric Wizard
 
Posts: 2566
Joined: Tue Jan 06, 2015 4:04 pm
Model of CNC Machine: PDJ Pilot Pro

Re: Visiting 3D carving

Postby highpockets » Wed Nov 13, 2019 4:47 am

Can't upload the file, it's just over sized, even zipped, but here are the tools and setting I used.
Attachments
Image 602.png
Image 603.png
Created a bounding box around job and Vector Boundary around model
Image 604.png
Image 605.png
Image 606.png
Image 607.png
John
Maker of Chips
User avatar
highpockets
Vectric Wizard
 
Posts: 2566
Joined: Tue Jan 06, 2015 4:04 pm
Model of CNC Machine: PDJ Pilot Pro

Re: Visiting 3D carving

Postby Adrian » Wed Nov 13, 2019 9:04 am

The other thing to watch out for is the size of the model in relation to the material. The smaller the model is in relation to the material the more pixels are being wasted and the resulting model will be lower resolution than it would otherwise be.

The major issue here though, as stated previously, is the stepover is way too big on the finishing pass.
User avatar
Adrian
Vectric Archimage
 
Posts: 9805
Joined: Thu Nov 23, 2006 2:19 pm
Location: Surrey, UK
Model of CNC Machine: ShopBot PRS Alpha 96x48

Re: Visiting 3D carving

Postby scotttarnor » Wed Nov 13, 2019 12:40 pm

Thank You highpockets and Adrian, Hopefully I can try again after work tonight.
scotttarnor
 
Posts: 17
Joined: Fri Aug 30, 2019 11:40 pm
Model of CNC Machine: Pirnha LX

Re: Visiting 3D carving

Postby Jan.vanderlinden » Wed Nov 13, 2019 4:26 pm

On thing that I have started doing is to make a second finish pass with a smaller cutter and stepover
1) Roughing pass with .25 end mill
2) Finish pass with .25 ball end mill
3) Finish pass with .020 tapered ball end mill.
The results are fantastic.
Much more detail and cleaner finish.
This is the cutter
JERRAY
TC-R0.5 D1/4" 1-1/4" 3" 2F

20191011_132302.jpg
I've learned so much from my mistakes, I'm thinking of making a few more.
Jan.vanderlinden
Vectric Craftsman
 
Posts: 202
Joined: Wed Sep 28, 2016 10:19 pm
Location: Columbus Ohio
Model of CNC Machine: Xcarve

Re: Visiting 3D carving

Postby scotttarnor » Thu Nov 14, 2019 12:11 am

Thank You JERRAY !
scotttarnor
 
Posts: 17
Joined: Fri Aug 30, 2019 11:40 pm
Model of CNC Machine: Pirnha LX

Re: Visiting 3D carving

Postby Xxray » Fri Nov 15, 2019 5:43 am

Jan.vanderlinden wrote:On thing that I have started doing is to make a second finish pass with a smaller cutter and stepover
1) Roughing pass with .25 end mill
2) Finish pass with .25 ball end mill
3) Finish pass with .020 tapered ball end mill.
The results are fantastic.
Much more detail and cleaner finish.
This is the cutter
JERRAY
TC-R0.5 D1/4" 1-1/4" 3" 2F

20191011_132302.jpg


Am wondering how results would be different or any better with an extra pre-finish pass. In theory, there shouldn't be any difference.
Doug
User avatar
Xxray
Vectric Wizard
 
Posts: 1967
Joined: Thu Feb 17, 2011 8:47 am
Location: MI USA
Model of CNC Machine: CAMaster Stinger 1

Re: Visiting 3D carving

Postby gkas » Fri Nov 15, 2019 6:08 am

Xxray wrote:
Jan.vanderlinden wrote:On thing that I have started doing is to make a second finish pass with a smaller cutter and stepover
1) Roughing pass with .25 end mill
2) Finish pass with .25 ball end mill
3) Finish pass with .020 tapered ball end mill.
The results are fantastic.
Much more detail and cleaner finish.
This is the cutter
JERRAY
TC-R0.5 D1/4" 1-1/4" 3" 2F

20191011_132302.jpg


Am wondering how results would be different or any better with an extra pre-finish pass. In theory, there shouldn't be any difference.


+1.

I can't see any way two finish passes over the same material would make any difference to the final result. Rest Machining, yes; this, no.
User avatar
gkas
Vectric Wizard
 
Posts: 527
Joined: Sun Jan 01, 2017 3:39 am
Location: Southern California
Model of CNC Machine: Aspire, Axiom AR8 Pro+, Axiom 4.2W Laser

Re: Visiting 3D carving

Postby BigC » Fri Nov 15, 2019 11:42 am

Jan.vanderlinden wrote:On thing that I have started doing is to make a second finish pass with a smaller cutter and stepover
1) Roughing pass with .25 end mill
2) Finish pass with .25 ball end mill
3) Finish pass with .020 tapered ball end mill.
The results are fantastic.
Much more detail and cleaner finish.
This is the cutter
JERRAY
TC-R0.5 D1/4" 1-1/4" 3" 2F

20191011_132302.jpg

Bookmarked
Thanks for the info
Regards
C
BigC
Vectric Craftsman
 
Posts: 208
Joined: Tue Apr 02, 2019 7:06 pm
Model of CNC Machine: Workbee

Re: Visiting 3D carving

Postby Xxray » Fri Nov 15, 2019 11:00 pm

gkas wrote:
Xxray wrote:
Jan.vanderlinden wrote:On thing that I have started doing is to make a second finish pass with a smaller cutter and stepover
1) Roughing pass with .25 end mill
2) Finish pass with .25 ball end mill
3) Finish pass with .020 tapered ball end mill.
The results are fantastic.
Much more detail and cleaner finish.
This is the cutter
JERRAY
TC-R0.5 D1/4" 1-1/4" 3" 2F

20191011_132302.jpg


Am wondering how results would be different or any better with an extra pre-finish pass. In theory, there shouldn't be any difference.


+1.

I can't see any way two finish passes over the same material would make any difference to the final result. Rest Machining, yes; this, no.


Seems like a waste of time, resources and energy to me but Jan is no novice and produces top notch work, we'll see what he has to say. He does say he reduced stepover and uses a smaller bit on the 2nd finish pass and this of course can make a great difference in detail ,, But this could [should] have been done in the first place, I'm just not seeing the logic, especially since most people look to decrease cutting time, not increase it.
Doug
User avatar
Xxray
Vectric Wizard
 
Posts: 1967
Joined: Thu Feb 17, 2011 8:47 am
Location: MI USA
Model of CNC Machine: CAMaster Stinger 1

Re: Visiting 3D carving

Postby adze_cnc » Sat Nov 16, 2019 12:46 am

If you use Z-level roughing then I can see "2. Finish..." with a large step-over as being a 2nd roughing cut to clear away the bulk of the material for the 020 bit.

If you are using a 3D raster roughing pass then sure #2 is probably superfluous. But, I could imagine many cases where "Z-level" plus the 1/4" ball pass would be quicker than using "3D raster".
User avatar
adze_cnc
Vectric Apprentice
 
Posts: 756
Joined: Sat Jul 27, 2013 10:08 pm
Location: Vancouver, BC, Canada
Model of CNC Machine: AXYZ 4008

Re: Visiting 3D carving

Postby Xxray » Sat Nov 16, 2019 4:26 am

Well sure, 2nd pass can be looked at as "2nd roughing pass" or "1st finish pass". I have never seen a case where a roughing pass needed to remove more material for a finish bit, in fact I often forego roughing all together in all but the hardest of woods and deepest of cuts. Unless you are using a machine made out of plastic and a bit made in Nigeria, there is IMO no logical/useful reason to add another pass to the process, this is the 1st I have ever heard of it being done which is why I am curious as to why, I grant that maybe I am missing something here.
Doug
User avatar
Xxray
Vectric Wizard
 
Posts: 1967
Joined: Thu Feb 17, 2011 8:47 am
Location: MI USA
Model of CNC Machine: CAMaster Stinger 1

Re: Visiting 3D carving

Postby BigC » Sat Nov 16, 2019 9:18 am

Forgoing if the second roughing pass is necessary or not and just go ahead with perhaps a smaller roughing bit and then use the tapered ball mill.
A question about the tapered ball mill if I may please,
How exactly would I go about setting one of these up (Tapered Ball Mill) in the Tool Database? (*typical newbie question :oops: )
and are they a useful bit to have to hand.
I may add one of these bits to my Santa List
Tool Database clip.JPG

Many Thanks
Regards
C
BigC
Vectric Craftsman
 
Posts: 208
Joined: Tue Apr 02, 2019 7:06 pm
Model of CNC Machine: Workbee

Re: Visiting 3D carving

Postby Adrian » Sat Nov 16, 2019 11:24 am

There is a tapered ball nose tool type in the list of tools. Click the Add Tool icon in the bottom left and then choose the Tapered Ball Nose from the dropdown that appears in the dialog.
User avatar
Adrian
Vectric Archimage
 
Posts: 9805
Joined: Thu Nov 23, 2006 2:19 pm
Location: Surrey, UK
Model of CNC Machine: ShopBot PRS Alpha 96x48

Next

Return to VCarve - General

Who is online

Users browsing this forum: No registered users and 31 guests