Pocket Toolpaths Still Run Through a Boss, After All These Years

[Jobnt]

I would think after decades this wouldn't happen any more. 

Kudos to CNC Software for keeping things real after all these years. 

Figured I'd remove the chain point and re-add it. 

It's not running over the boss now. Well... not the same boss it did the first time. Now it's a different boss. 

LOL?

[Aaron Eberhard]

I can't tell what's going on in your pictures.

Are you chaining a start/end point and upset that it's going to the start/end point?  Can you upload a file?    Looks like a pocket for Dynamic to me...

[Jobnt]

6 minutes ago, Aaron Eberhard said:

and upset that it's going to the start/end point?

LoL, you're cute.

No. That would be kind of stupid.

I'm mad that I have two islands selected for my pocket and the tool keeps running them over. 

 

 

[#Rekd™]

26 minutes ago, Jobnt said:

Kudos to CNC Software for keeping things real after all these years. 

Keeps you on  your toes!!!!

[Jobnt]

1 minute ago, #Rekd™ said:

Keeps you on  your toes!!!!

No. Sadly, it keeps me wanting to go back to GibbScam. 

[#Rekd™]

Why is the point outside of the pocket?

[Aaron Eberhard]

4 minutes ago, Jobnt said:

LoL, you're cute.

 

That's what mama always said.

 

Can you post a file yet?

[Jobnt]

1 minute ago, #Rekd™ said:

Why is the point outside of the pocket?

Because I want to plunge off the part, not ramp into it. 

[gcode]

5 minutes ago, Jobnt said:

LoL, you're cute.

No. That would be kind of stupid.

I'm mad that I have two islands selected for my pocket and the tool keeps running them over. 

 

 

You got some of the best in the business offering to help you and you reply with the smart mouth.

I've no doubt this problem is easily fixed but with an attitude like that why should anyone bother???

[Jobnt]

Just now, gcode said:

You got some of the best in the business offering to help you and you reply with the smart mouth.

I've no doubt this problem is easily fixed but with an attitude like that why should anyone bother???

I DON'T HAVE A DAMNED ATTITUDE! 

Kidding. I typically only give attitude when I get attitude. See below. 

18 minutes ago, Aaron Eberhard said:

Are you chaining a start/end point and upset that it's going to the start/end point? 

Unless of course it's a decades old problem in Mastercam that STILL isn't fixed. 

[#Rekd™]

Do you have Center on entry point selected?

 

I tried something similar in MC2019 and it is respecting the bosses, I can reselect the point and no issues,

[Jobnt]

Just now, #Rekd™ said:

Do you have Center on entry point selected?

 

I tried something similar in MC2019 and it is respecting the bosses, I can reselect the point and no issues,

Thanks, will check it out in a bit.

I turned off entry motion thinking it would be better if I am plunging outside the part. 

I moved the point around until I found a place it left both bosses so I moved on. 

18 minutes ago, Aaron Eberhard said:

Can you post a file yet?

I will strip one down in a bit and post it. For now I need to get this program done. Thanks for the help.

[byte]

I drew a similar shape as well, it looks fine, I used the same center on point option as 4D

[Jobnt]

7 minutes ago, byte said:

I drew a similar shape as well, it looks fine, I used the same center on point option as 4D

Thanks, Kid. Appreciate you taking the time. My file is below and an image of my fix is attached.

I have had this problem for literally decades. Seems like such an easy fix. I can usually work through it by moving start points around like I did here, it just amazes me that this is still an issue.

Here's the stripped down file. You can move the start point around and it changes the behavior. I moved it up to the back left side as much as I could and got it to work. 

Pocket Start Point Fail.mcam

[cam-eleon]

I just hit re-gen in 2023 and it goes around the island

[volitan71]

I went into your chains and moved the point from last to first.

 

[byte]

10 minutes ago, Jobnt said:

Thanks, Kid. Appreciate you taking the time. My file is below and an image of my fix is attached.

I have had this problem for literally decades. Seems like such an easy fix. I can usually work through it by moving start points around like I did here, it just amazes me that this is still an issue.

Here's the stripped down file. You can move the start point around and it changes the behavior. I moved it up to the back left side as much as I could and got it to work. 

Pocket Start Point Fail.mcam 810.6 kB · 1 download

I do see the issue when I load your file, changing the strategy to parallel spiral does result in a good toolpath, it appears constant overlap is causing issues,

Thanks for sharing this is a good one for QC

4 minutes ago, cam-eleon said:

I just hit re-gen in 2023 and it goes around the island

It did not change for me on regen

[volitan71]

4 minutes ago, cam-eleon said:

I just hit re-gen in 2023 and it goes around the island

 

 

Huh. Even better, I didn't even have to move the point. I tried regenerating it in 2022 like you without moving anything and it worked. Weird.

[volitan71]

Well for what it's worth, in 25ish years on Mastercam I've never had a tool run through an island. 

I've always picked entry points first though. Coincidence? Does it make a difference? No idear...

[Jobnt]

30 minutes ago, volitan71 said:

Well for what it's worth, in 25ish years on Mastercam I've never had a tool run through an island. 

I've always picked entry points first though. Coincidence? Does it make a difference? No idear...

I've been using mastercam since v9 (what's that, almost 3 decades?). I've always had this problem.

I've tried picking chains and points in different orders, changing sizes, changing depths, changing tool geometry, changing start point positions, etc etc. 

The only thing that ever works is moving the start point position and that only works half the time (like on this part where I have a lot of options on where to put the start point, but on some parts I don't have that luxury so this is a complete fail.)  

[volitan71]

14 minutes ago, Jobnt said:

I've been using mastercam since v9 (what's that, almost 3 decades?). I've always had this problem.

I've tried picking chains and points in different orders, changing sizes, changing depths, changing tool geometry, changing start point positions, etc etc. 

The only thing that ever works is moving the start point position and that only works half the time (like on this part where I have a lot of options on where to put the start point, but on some parts I don't have that luxury so this is a complete fail.)  

 

That's really weird man.

[Thad]

23 minutes ago, Jobnt said:

I've been using mastercam since v9 (what's that, almost 3 decades?). 

Closer to 2 decades, actually, but I get your point. I started using MC in 2002 and my first training class was on the newly released V9.

[Colin Gilchrist]

39 minutes ago, Jobnt said:

I've been using mastercam since v9 (what's that, almost 3 decades?). I've always had this problem.

I've tried picking chains and points in different orders, changing sizes, changing depths, changing tool geometry, changing start point positions, etc etc. 

The only thing that ever works is moving the start point position and that only works half the time (like on this part where I have a lot of options on where to put the start point, but on some parts I don't have that luxury so this is a complete fail.)  

Congratulations, I started with 6.1.3.

I used identical speeds/feeds to your Pocket Path, and cut the time in half. I wasn't sure where the actual "air boundary" of the part is. (Where you have clearance outside the part), so I used a partial chain to control where the toolpath is allowed to approach the part.

Is the whole outer boundary "in air"? If yes, no reason to use "air chains".

Open pocket - 2D Dynamic Example.mcam

[gcode]

12 minutes ago, Colin Gilchrist said:

Congratulations, I started with 6.1.3.

I took 3 semesters programming at Saddleback Community College using V5

I thought it was pretty cool at the time, but looking back, it was very primitive.

Anyone else remember MCTV??

I started doing actual work with Mastercam in V7, in 1998 (?)

[JoshC]

24 minutes ago, Colin Gilchrist said:

Congratulations, I started with 6.1.3.

I used identical speeds/feeds to your Pocket Path, and cut the time in half. I wasn't sure where the actual "air boundary" of the part is. (Where you have clearance outside the part), so I used a partial chain to control where the toolpath is allowed to approach the part.

Is the whole outer boundary "in air"? If yes, no reason to use "air chains".

Open pocket - 2D Dynamic Example.mcam 780.02 kB · 2 downloads

i was gonna say is no one going to suggest a modern toolpath, pocket is sooooo outdated.... nothing wrong with doing things the old way, but if improvements can be made why not do it, dynamics only scary at first, then it just becomes the norm