v11 rest machining question

[Desert_Woodworker]

I assume that by selecting multiple tools bits this takes the place to get to those uncut areas.. does the program do all the computations for the smaller tool bits?

[martin54]

It means that for a finish pass rather than machining the whole model with a small bit to get the required level of detail which obviously takes a lot of time you can use multiple tools & the larger bit will do all the areas it can fit into & the smaller bit will only do the areas the larger bit will not fit
Not a very good explanation but hope it gives you an idea. Yes the computer does all the work, it takes longer to calculate the toolpaths but if you have a reasonably high spec machine it's not that much longer.

Have you watched the whats new in V11 video ??

[scottp55]

Using VCP 11.006 here, but thinking the rest machining option is the same as Aspire(?).
I'm doing a series of Tinys, and only spent about 6 hours trying this feature,
but nothing I've tried so far gives me something that a single tool(30 engraving .005flat) toolpath
in max preview is way better and I can follow the whole toolpath improvement by eye.

Is there a tutorial that covers this better than "What's New"?
I must be doing something wrong(or not spending enough time on variations).
Still cutting this as VCP10.5** until I figure this feature out.

I realize Vectric staff is right out straight with Many things going on...Thanks Staff and Support!!

Thanks,
scott

[Pete Cyr]

https://www.vectric.com/support/tutoria ... -toolpaths
Review this tutorial at step 4 - it clarifies the rest machining process

[Rcnewcomb]

but nothing I've tried so far gives me something that a single tool(30 engraving .005flat) toolpath
in max preview is way better and I can follow the whole toolpath improvement by eye.

Rest machining provides significant time savings on designs have smooth areas as well as detailed areas. Notice the example in the video tutorial has smooth areas for the dish, and highly detailed areas where it transitions from the dish to the other parts of the design.

An example of one of ScottP55's pieces that might benefit is the Shaman design on a flat background. The main design would likely be cut by the smaller tool, but the background could be cut faster with a larger tool.

My own experience has shown that at least a 4 to 1 ratio between the larger tool and the smaller tool gives good results, i.e 0.5" and 0.125" for example.

However, some of ScottP55's designs would probably see no benefit from rest machining. The detailed tree is an example where there aren't enough smooth areas that could be machined entirely with a larger bit.

[scottp55]

Thanks Pete!
Just watched it, and explains a few things like the 2 Offsets.
But still getting getting funky results.
Most likely because it's imported at Max res(50X), and using 2 such small tools.
I changed 3 things yesterday while 2 hr cut was going on and got 1 Nightmare(WTF) preview.

2 identical models and tool settings, and didn't act at ALL like the previous 7 versions.
Went back and changed only 1 thing at a time, to try to find the issue...but Now it's behaving(kinda).

But still at max (Fine) slider, it's skipping over things like clearing out letters.
I'll keep plugging away, as it could save me a LOT of time....
but it may just be this particular model at this particular Tiny size
like Randall pointed out with those trashy pieces of workmanship.
Thanks!
scott