Anyway to just do detail pass for 3d carve?

This forum is for general discussion regarding VCarve Pro

Anyway to just do detail pass for 3d carve?

Postby jgwl » Fri Oct 26, 2018 4:42 am

Hi all, first time poster.

I'm carving out a model that has concave angular valleys. Is there any way for me to run a pass with a smaller ball end to ONLY just cut out the details that my larger ball end couldn't reach into? I think of it as the 3d equivalent of tracing an outline with a smaller diameter bit. I don't want to recarve the whole model with my smaller ball end, I just want my machine to cut into the creases that my larger endmill couldn't fit.

Can we do some sort of diff between say, the 1/8" ballend model and a 1/16" ballend model, and then only generate the gcode for the differences where it reached a certain threshold?

Thanks!
jgwl
 
Posts: 2
Joined: Wed Oct 24, 2018 5:18 am
Model of CNC Machine: Shapeoko 3

Re: Anyway to just do detail pass for 3d carve?

Postby Rcnewcomb » Fri Oct 26, 2018 6:50 am

You can draw vectors to control where the smaller bit will go.

With Aspire there is a technique called Rest Machining where you can create a 3D component that covers the areas that a smaller bit can cut, but would have been missed by a larger bit.

WIth either technique there will be a witness line that will need to be sanded away after the piece comes off the machine.
- Randall Newcomb
10 fingers in, 10 fingers out - another good day in the shop
User avatar
Rcnewcomb
Vectric Wizard
 
Posts: 3113
Joined: Fri Nov 04, 2005 5:54 am
Location: San Jose, California, USA
Model of CNC Machine: GCnC/WinCNC

Re: Anyway to just do detail pass for 3d carve?

Postby martin54 » Fri Oct 26, 2018 6:57 am

Aspire does something called "Rest Machining" for this sort of thing but I don't think Vcarve will do it. There is no way to calculate the difference between 2 toolpaths & only machine the difference in any of the Vectric software that I know of. Having just said that I guess that's what rest machining does :lol: :lol: :lol:

When I was using Vcarve pro & had one or two small areas that really needed a smaller endmill I would draw some vectors around those areas & then use the vector boundary option & generate another finish pass, worked OK for me :lol: :lol:

Oh Randall types faster than me lol
Last edited by martin54 on Fri Oct 26, 2018 7:00 am, edited 1 time in total.
User avatar
martin54
Vectric Wizard
 
Posts: 3986
Joined: Fri Nov 09, 2012 2:12 pm
Location: Crossgates, Scotland
Model of CNC Machine: Gerber System 48 (modified)

Re: Anyway to just do detail pass for 3d carve?

Postby jgwl » Fri Oct 26, 2018 4:48 pm

Thanks all! Great tip about reducing your area using vectors; I'll give it a try this weekend.

And now I know the correct term for what I was trying to accomplish.
jgwl
 
Posts: 2
Joined: Wed Oct 24, 2018 5:18 am
Model of CNC Machine: Shapeoko 3

Re: Anyway to just do detail pass for 3d carve?

Postby sharkcutup » Sun Oct 28, 2018 1:22 pm

I always just add some vectors to the areas where I would like the machine to carve. And when doing this if it is a 3D model be sure to Select 'project tool path onto 3D model' or else you will be just cutting air. It take a little extra time but the end results are much better.

Just a Thought!

Sharkcutup
Facebook: Hogan's CNC Crafts
Website: hoganscnccrafts.com
V-Carve Pro 9.511
sharkcutup
Vectric Craftsman
 
Posts: 230
Joined: Sat Mar 26, 2016 3:48 pm
Model of CNC Machine: Shark HD3 Pro Extended Bed with Spindle

Re: Anyway to just do detail pass for 3d carve?

Postby martin54 » Sun Oct 28, 2018 7:41 pm

sharkcutup wrote:I always just add some vectors to the areas where I would like the machine to carve. And when doing this if it is a 3D model be sure to Select 'project tool path onto 3D model' or else you will be just cutting air. It take a little extra time but the end results are much better.

Just a Thought!

Sharkcutup


This is a 3D model that requires some detail work in just a couple of areas rather than the whole model being cut with a smaller bit :lol: :lol:

No project toolpath onto 3D model with a 3D finish pass. The idea is to draw a couple of vectors around the areas that need the smaller bit & then use the vector machining boundary when generating a second finish pass :lol: :lol:
User avatar
martin54
Vectric Wizard
 
Posts: 3986
Joined: Fri Nov 09, 2012 2:12 pm
Location: Crossgates, Scotland
Model of CNC Machine: Gerber System 48 (modified)

Re: Anyway to just do detail pass for 3d carve?

Postby sharkcutup » Mon Oct 29, 2018 3:26 pm

Hey Martin54,

I do understand that it is a 3D model being finished entirely.

You have a clever idea but I was just pointing out that there is another way to do some cleanup which has served well for me which is a separate toopath usually a profile toolpath and I was pointing out that if anyone was to do this on a 3D model to be sure to check the box "project toolpath onto 3D model"or else they would be just cutting air.

I was not in any way trying to take away from your initial post, In fact, I sort of like to try your idea next time.

Sharkcutup
Facebook: Hogan's CNC Crafts
Website: hoganscnccrafts.com
V-Carve Pro 9.511
sharkcutup
Vectric Craftsman
 
Posts: 230
Joined: Sat Mar 26, 2016 3:48 pm
Model of CNC Machine: Shark HD3 Pro Extended Bed with Spindle

Re: Anyway to just do detail pass for 3d carve?

Postby martin54 » Mon Oct 29, 2018 3:49 pm

sharkcutup wrote:Hey Martin54,

I do understand that it is a 3D model being finished entirely.

You have a clever idea but I was just pointing out that there is another way to do some cleanup which has served well for me which is a separate toopath usually a profile toolpath and I was pointing out that if anyone was to do this on a 3D model to be sure to check the box "project toolpath onto 3D model"or else they would be just cutting air.

I was not in any way trying to take away from your initial post, In fact, I sort of like to try your idea next time.

Sharkcutup


Its not my idea, its how the software has been designed to work so its Vectrics idea :lol: :lol:
I can't see how you can use a profile toolpass strategy to enhance detail on a 3D model so some insight in how to do that would be good for all. I do use the Project toolpath option with 3D models when I want to add text, a pocket cut or some other addition to a 3D model that I am working on but I would never have considered it possible to use for this sort of thing where a particular part of a 3D model needs a bit more detail & a smaller tool is needed just for that part of the model :lol: :lol:
User avatar
martin54
Vectric Wizard
 
Posts: 3986
Joined: Fri Nov 09, 2012 2:12 pm
Location: Crossgates, Scotland
Model of CNC Machine: Gerber System 48 (modified)


Return to VCarve - General

Who is online

Users browsing this forum: adze_cnc, Diggin2day1, Google [Bot] and 26 guests