You need to read the forum guidelines. Requesting posts is not permitted. I am surprised you haven't been moderated.

It's called a Higby by the "roundies".

Note the point doesn't have to be in the "center", the path will "morph" to compensate.

One way, that's what a spiral is. Using the point as your first chain gives it a starting point. The legacy toolpath works too and doesn't have so many options, so might be easier to control. Right click in Ops Manger to get to the Legacy Surface Toolpaths.

Have you tried a parameter dump?

Yes it does. Select a point as you first chain and then the profile chain. This works well, and because it is a projected path, you can project from any view using the construction plane, regardless of the tool plane (i.e Cplane does not = Tplane)

In the meantime you could run a file compare against the Mastercam generic 4 axis post. Look in the downloads section on the Mastercam site and see if there is a Mazak Genric. Either one of these should give you a clue when compared to your current post. Looks like a pretty old post. You might want to consider updating, it is involved but you will learn a lot about post editing and you might end up with more functionality. I updated mine when I went to X9, and I plan another when I update to 2021.

There is a specific stream that handles single tool programs. Yours appears to be broken. Just remind me, what are the initials used in the revision log section just below where you stopped (IHS or CNC are usual). I think this was a generic. Kinda busy now, will take a look later if I get a chance. Try searching "Single tool" and you will see the specific post blocks and functions which control this.

Look out for Post Processer editing classes through emastercam. Colin Gilchrist runs these and is a frequent forum contributor and usually gives a heads up on the forum when one is planned.

So it is actually a CNC generic post, I am not as familiar but should be OK. if rot_on_x, pbld, n$, *sgcode, *sg28, protretinc, e$ *****************( not sure how to arrange this line, if at all) #if rot_on_x, pbld, n$, *sgcode, *sg28, protretinc, e$ *****************( not sure how to arrange this line, if at all) Add the # at the front of the line in pretract and pretract0, this will prevent the G0 G29 A0 line from being output at toolchange. Try reposting after the edit and see where you are. In mpmaster there is a similar line in peof which should output the line at the end of the program, if not you might have to insert it. One step at a time will prevent back tracking.

Looks like Mpmaster, to confirm this look at the Revision Log just below the Header above. If it has IHS and dates it is an IN House Solutions Mpmaster post, or at least started that way. The post blocks which control the output you are interested in are pretract which outputs the code at tool change events, pretract0 which outputs at null tool change events (operation change but tool is the same) and peof which outputs at end of file. The line you are looking for should look something like this: pbld, n$, *sg28, protretinc, e$ This is the output line for G28 A0 and it looks like some one has added in a reiterated forced G0, there are several ways of doing this. Comment out this line in pretract and pretract0. To do this use # at the beginning of the line.

Which "base post" is it?

Not with Okuma. Haas Fanuc and Mitsubishi but ended up booking extended training. We are post and go here so I wanted specific control with comments etc...still lots to do to get 100% good output as it depends to some extent how your machine was set up. It is not unlike "post editing" for complexity. With all the bells and whistles that come standard on every Okuma, I wouldn't be surprised if the set up for these machines is more challenging, probably excellent functionality once you get it figured out...

Have you been in touch with Renishaw or your reseller? This isn't plug and play on Haas and Fanuc which it was designed around originally.

Just to add to Ron's physics lesson, the other thing additional flutes give you is more continuous engagement of the flutes. This results in a more stable cut as there is always at least a couple of flutes engaged even on a light radial cut. A three flute endmill might only have a single flute engaged and the cutter can start to bounce. In the corners with extra material the 3 flutes are just overwhelmed and deflect. More engagement can prevent both of these conditions. As with everything machining it is a matter of balance. We do a lot of unsupported 4 axis work and we often "tune" cutter paths by changing the number of flutes on the cutter. Balancing the tool pressure with the chip formation through the whole cut is the goal.

I have machined a fair number of swaging dies in this and S7. 250 sfm. - 600 sfm (high feed) I will program for a typical chip load for the cutter diameter and use Mastercam's RCTF. 1.5 dia depth is usual but 2 dia isn't usually a problem with a little less energy (hence the 250 sfm which is on the low), but tool life is excellent. We use Imco and Helical It's important to calculate effective surface footage and chip load if you do any surfacing or you will rub your cutter to death quickly.

Version?

Have you tried the mcosmos forum?

JP is right no real clean way. Another tool to keep it as clean as possible (minimum number of OPs), rough depth passes will be calculated as a max. value and may vary. Finish depth passes are fixed at the entered value which makes controlling the top of the cut easier.

It will not follow the surface with the path you want because by definition it is a 2 dimensional path. It cuts a single area at a specified depth(s) defined by a 2d boundary, regardless of how many times you call it. As Rstewart and Leon82 said you need to give the system your starting stock in 3 dimensions and your finished part in 3 dimensions in order for the system to calculate the toolpaths you want. You might be able to use "Trim toolpath" but this has a tendency to be problematic as editing and regenerating can take more time. Because of this I avoid it unless backed into a corner, maybe I use it once every couple of years. I have never used it with facing or 2D Dynamic but you could give it a go.

You need to check which "base posts" you are using. the one that works and the one you are modifying. If they are the same it should be pretty straightforward. If different maybe not so. Look at the Revision Log at the top of the post, if the initials are IHS then it is probably Mpmaster, if CNC then a CNC generic or machine OEM post (they do a bunch of Haas posts for instance). You need to make sure all your custom variables are defined and initiated too. Do you have the documentation? Would definitely make it easier for you as, it describes these things . Search the post that works with your variables and functions and see what else has been added to make the statements go. Again, this isn't something I have dealt with because the standard output works fine for us, so I would urge you to search the forum. I have followed some of the threads and they are quite interesting, I didn't copy them ( I often do) coz its just not on the our radar .

Contact Renishaw. They will sort you out with all kinds of documentation and tutorials. They also have good phone support for individual problems

You will have to construct your own logic in the post. Try searching the forum, there have been several examples of "custom" line numbers over the years. Do you intend to have all lines numbered? That will eat up a lot of memory, especially with larger tool numbers.

So what was the point of this thread?

Some people have NO sense of humor....at all...