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  1. UPDATE The discrepancy from the start Z value was 100% the culrpit! Is this a mastercam issue or post?
  2. Hi all, thanks for helping with this. Update, on a fresh piece i just ran the roughing cycle and the thread was as expected, too big, large crests. I comped the tool about ten thousandths and made a perfect thread (according to pitch mics and gage) I will test after lunch and run the spring cycle and see if it wipes the threads out. I did notice there is a varying Z start position and wondered if there isnt mismatched threads
  3. Hello, I am attempting to thread 3.75 - 12 UN 2A on some cold rolled low carb. I have 2 separate ops for this. First is the thread cycle. Then the second is a spring pass (see screen shots and output code) to work in the thread. When running the first cycle, the cut is smooth but the crest of the thread is very flat and wide. Clearly and unusable thread not to size. This makes no sense to me. Finally when i run the spring pass op, the thread is cut heavy and produces a chattered thread that now looks more like the form of the thread im cutting. Both posted ops are almost identical with exception of first pass depth (or whatever D value is). Its deeper in the spring pass because its going to full depth which makes sense to me. Control is a Haas NGC. Any ideas whats going wrong? Thanks a lot!
  4. Hi, Want to open a fun discussion on the witchcraft we call CAM software. And specifically, the topic is, who solely or in part is largely responsible for the majority of the mathematics behind CAM toolpaths. We think about 5 Axis simultaneously toolpaths. A lot of math is involved. Can we attribute this technology to a specific engine, or set of engines? And can these engines be attributes to the works for a few specific people: engineers, mathematicians. What can YOU offer this discussion?
  5. Hi all I have a new Haas ST35LY. I posted a cross drill toolpath and received a G87 from the post with cut parameters set to "Drill/Peck - G83/G87" Executed at the machine with an invalid g code error. I changed the G87 to a G83 and ran the toolpath. The result was a drill feed that was very fast. Instead of 1.6 ipm, it was more like 10+ IPM. Verified G98. Good. I stopped the toolpath and eventually posted a long hand program to get the job done. I dry ran the modified G83 program today and examined it more carefully. The drill moves in the Z axis after reaching hole depth, which is obviously a recipe for a busted drill. Clearly the post has issues with outputting G87 on a lathe. But I dont know why 1.) The feed is way too fast 2.) The drill is moving in Z after reaching depth. Perhaps g83 isn't the code to use. Not super experienced with C Axis stuff. Any tips is appreciated to solving this. (See attached)
  6. @AHarrison1 I'm just wondering what the max chucking diameter of those jaws even means? Is that based on any radius that the mfg cuts on them? Or is it based on hole position relative to jaw ends?
  7. Hi, Thanks for your input. I'm familiar with the royal QG. They don't make anything for the stock sizes I listed. I was wondering if anyone had experience with other modular jaw systems that can be used, like the schunk system you linked. As for the hard jaws - If my work ranges from 4 - 12", do you think one size would suffice (12 inch maximum chucking diamter), or would it be wise to get sets of various "maximum" chucking diameters? Thanks a lot
  8. Hi all, I will preface the post by apologizing in advance for the noobie questions on lathe workholding, as its not my expertise. We have a new machine with a Samchully 12" chuck. The chuck shipped with some basic un-cut soft steel jaws.. The nature of our work is relatively loose tolerancing +/- .010. Our work is also relatively big. from 4" to 12" dia and mostly steel. What I am looking to get info on is, what is a good solution for our work? Do I need to cut a set of jaws for every component we make (runout tolerances are virtually inexistent with some of this work)? Or can I get away with using a "universal" style step jaw like seen here: https://www.mscdirect.com/product/details/54219217 And lastly, maybe a quick-change solution exists that would make setups easier for us? Brand new lathe and want to get it right from the start. Appreciate the feedback.
  9. @crazy^millman Thanks for your 2 cents on this. I think we will still attempt to machine one as accurate as possible, then test runout and see if what we produced is suitable enough for our work. Yep, I didn't forget the pins. Thanks a lot
  10. Hi all, Working on designing a classic boring ring for a CNC lathe. Rather than spend hundreds, I think it would be a feasible project to do at the shop. My only question is how do I solve for the arc diameter (see in photo in blue). Perhaps it is somewhat arbitrary? Or maybe its a spline? Some dimensions I used from Penn Tool Co to get a rough design, but the arc is not given: https://www.penntoolco.com/precise-chuck-jaw-boring-rings/ Thanks for any help.
  11. Update: While I can uncheck x-style and modify the disable code (m74) as seen below, it does not post correctly. I suspect this isn't possible without post modification, but would be glad to hear your thoughts thanks.
  12. Hi, I hate x-style coolant for a single reason: its cumbersome. Instead of a single dropdown, there are two to worry about. The Before, With, After is excessive for probably 90% of machining centers. With is the most used condition. My problem: I want a simple On/Off for 3 modes: FLOOD M08/M09 MIST M73/M74 THRU M88/M89 The post is only written for M08/M09 and M88/M89 - meaning that M73/M74 is not supported. Which means using "traditional" coolant mode, I cannot specify the disable code (grayed out), as seen in this image. My question: Is it possible through the machine definition general parameters to achieve a simple on/off for all 3 modes i specify without physically editing the post? Or am I stuck with this bulky and over-engineered way of turning coolant on or off. Thanks
  13. Hi, Following the guide. The guide is listed in X8, I had to modify the path for 2022. In post build events, I set the field to: copy "$(TargetPath)" "C:\Program Files\Mastercam 2022\Mastercam\chooks\" copy "$(ProjectDir)\Resources\FunctionTable\$(TargetName).ft" "C:\Program Files\Mastercam 2022\Mastercam\chooks\$(TargetName).ft" I get error at startup, exited with code 0. Do spaces need properly escaped in the path name? Thanks

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