Too low will produce a large taper with the top being smaller than the bottom.Too high will produce a large taper with the top being larger than the bottom.Cut Height / VoltageĪdjusting Cut Height, or Voltage when ATHC is enabled, gives another method of adjusting the taper in the finished cut:
![sheetcam plasma sheetcam plasma](https://blog.poscope.com/wp-content/uploads/2019/07/Plasma-THC-screenset.png)
When you make a custom path rule, just set the desired slow down percentage and the post processor will do the rest. The post processor provided automatically handles ATHC when the desired speed is set below 99% of nominal due to a SheetCam path rule. Since the Arc Voltage will be much greater during this slowdown, we must disable ATHC to avoid a crash. Taking this one step further, for small contours and holes, slow down even more! We recommend slowing down to 60% of the recommended Cut Feed as a starting point. When the torch reaches a corner, these affects are easily seen on a finished part.Įxamining the cutting tables closely, you can see one of the main differences between cut qualities is a decrease in Cut Feed as the quality increases. As our speed increases, the plasma arc begins to lag behind the torch. Using shielded consumables goes a long way to producing the proper conditions, but they operate best inside certain speed ranges. To minimize taper during a cut, we want the plasma arc to remain "stiff" and well-formed. Design your part tolerances accordingly, and drill or machine holes when necessary. You will not get perfectly concentric, +/-0.001" (0.025 mm) toleranced holes. Remember, plasma is not a milling machine or a laser. If the hole taper was too large, we could probably do a little better by lowering the speed and cut voltage. Head over to the JD Squared Channel on YouTube for examples of operating SheetCam.These parts were cut without tweaking parameters intentionally.
![sheetcam plasma sheetcam plasma](https://support.machmotion.com/uploads/images/gallery/2018-10-Oct/sheetcam-snippet-toggle.jpg)
When finished, SheetCam will be able to find the new post.ĭouble clicking the file will import the post into SheetCam. You may be asked for administrative priveleges, select Continue.
![sheetcam plasma sheetcam plasma](https://forum.langmuirsystems.com/uploads/default/original/2X/e/ee6d9a7c63342e511f348bdf01141520b23e2628.jpeg)
![sheetcam plasma sheetcam plasma](https://files.readme.io/ef65d4a-layers.png)
Right click in the folder and select Paste.Browse to C:\Program Files (x86)\SheetCam TNG Development\posts.Right click on the post file and select Copy.When installing the post processor there are two options: Method 1 - Recommended The post processor is located in the SheetCam Machines folder.
#SHEETCAM PLASMA INSTALL#
Install the SheetCam Machines DirectoryĬopy the SheetCam machine directory to the Documents directory. Install the mad_le fileĬopy and paste mad_le file to the Documents/mad_tools folder. The bundle currently contains a SheetCam Machines folder, and a mad_le file. You can even install these files to a network share.
#SHEETCAM PLASMA FREE#
If you are comfortable with Windows, feel free to customize the directory structure as you see fit. The following file locations are recommended, and reflect how a machine is initially configured at the factory.