Mastercam OptiRough using Stock aka OptiRest | Xometry Mill Test Part - Video 4

Link to download the CNC Mill Test Part Package... community.xometry.com/kb/arti...
OptiRough is Mastercams 3D roughing strategy that utilizes their Dynamic Motion Technology. We have several video out already covering this strategy quite in depth, so check those videos out for more info. The 3D version allows us to step down or step up a 3D part and still use this motion for material removal.
In this video I cover the difference between using stock (OptiRest) and not using stock (OptiRough) and how the Toolpath Containment interacts with this stock setting. I find giving the toolpath a stock model to work with takes a lot of guess work out of the containment boundary and typically is my go to method when using this toolpath. Of course, you don't have to use stock, just be aware of what information you are giving the toolpath about where material exists to be cut.
Beyond these stock settings, the main difference between OptiRough and Dynamic Mill is OptiRoughs ability to step up or down on a 3D shape. The strategy you use here depends on the tool you are using. An solid endmill, maybe its better to do a large step down combined with small step ups. A high feed cutter, maybe using just straight step downs is the best option.
Next up on our cut, limit its depth. Since we are holding the part in a vise and we don't want to cut into the vise, we need a way to limit how deep the toolpath cuts.
Also in this video, some discussion on Arc Filtering and Tolerance, as well as toolpath optimization for cycle time.
0:00 Intro Vise vs No Vise
1:40 Adding Geometry
2:15 Toolpath Control and Stock settings
5:28 Tool selection and Speeds and Feeds
7:24 Cut Parameters
12:55 Steep Shallow
13:35 Linking Parameters, Filtering, Tolerances
14:50 Toolpath Review and Optimization
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[@alexanderjamesINC]

Thank you so much for the amazing video.

[@CamInstructor]

Glad you enjoyed it!

[@goblinrio]

Good stuff, very informative.

[@CamInstructor]

Thanks!

[@kevin_1979]

I pick up something new with each video.

[@CamInstructor]

Glad to hear these videos are useful!

[@fisherholmsfly]

Thank you for the information. I just started learning mastercam and from an outsiders perspective this is a difficult program to operate. Even with all of your experience the first tool path mastercam created needed to be changed. I see it like Matlab. Sure it’s useful but only after 3 semesters of 3 credit college courses.

[@CamInstructor]

It will take some time but not quite that long :)

[@md8744]

Hi Sir I don't think with this advanced mastercam knowledge you don't have to explain deep or leave stock in vise holding how much!!! No more to save your time better showing more. Those is for beginners already they must know it. Hope you use this one on 5th axis from A to Z. Anyway thank you so much teacher

[@CamInstructor]

Our content is for all levels of Mastercam users.

[@Machining5]

In other videos I've seen optirough used, they show the tool "spiraling" up the walls of the part during the stepups but I can't figure out how to do that. Every time I use optirough it retracts and rapids to do the next stepup. But I'd like it If it was constantly engaged in the cut and walked its way up the part. Do you know how to do this?

[@CamInstructor]

No, optirough cannot spiral up. It cuts in Z levels.

[@policebox1092]

Awesome

[@CamInstructor]

Thanks!

[@ronstarr9167]

thank you for the video, good material :) In 19:02 cannot you just use minimum depth option in steep/shallow instead of manipulating with stock setup

[@CamInstructor]

No. It will still want to cut that stock that is above the part first. eg. if you set min depth to -0.02 but leave stock model at +0.02, the first cut depth will still be at -0.02. You have to get rid of the stock above the part to change this behavior.

[@ronstarr9167]

@@CamInstructor ok i understand you want to have only one cut at the bottom without facing the top, that makes sens thank you for this video :)

[@DrummInBeats]

What do you recommend for roughing an open window of a spoke of a wheel that is very concave? The stock is not square, it is very concave and I'm getting a lot of air time and stock left over in steps at the bottom of the spoke. I can send you an example file.

[@CamInstructor]

Most of the time my go to roughing for 3D is OptiRough driven by a Stock Model.

[@DrummInBeats]

@@CamInstructor I've been experimenting with that but once it goes past the stock in the z it has a lot of air time underneath the part where there is no material. I guess most MC users call this the mushroom effect. When placing a floor for it to avoid it leaves little steps of material. It's fun messing around with different stuff but I feel I've hit a wall.

[@CamInstructor]

@@DrummInBeats 2023 can handle mushroom stock models. 2022 and prior, machine the mushroom portion, make a new stock model, cut the rest.

[@tienhoang738]

How can you import the viise in mastercam ? Can you make a video please? Thank you.

[@CamInstructor]

Check at about the 11 minute mark in this video... kzbin.info/www/bejne/opnXmmqbmd9geM0

[@tienhoang738]

@@CamInstructor Can you please provide the VISE file link? I couldnt find it on their website

[@CamInstructor]

Kurt has all kinds of downloads on their website, that's where I got the file in the video. Other manufacturers have files as well. Here's a link to a vise on their site, download is part way down this page.... www.kurtworkholding.com/product/kurt-dx6-crossover-vise/

[@matthewvanlew5891]

Why not do a facing pass first so then you don’t have to lie about stock model?

[@kuei1215]

Optirough really sucks. Too many problems with it. Volumill is so much better.