To get a working usually involve exploring there others. If ground clamp of plasma cutter must be checked every time problems could be expected every now and then. It is possible to mitigate with proper procedures as is done for air safety and it work most of the time although it cost money. They got it to work with nitroglycerin once upon a time but dynamite is preferred. It will probably be hard to get procedure compliance then there are no real danger.
On Thu, 19 May 2016 08:13:32 -0500 Jim Craig <jimcraig5...@windstream.net> wrote: > So my goal is to let others learn from my mistakes. So in that way I > tend to make a lot of them so everyone can benefit. Last night I was > working with the plasma machine and made a big one! > > Don't ever forget to hook up the ground to the plasma cutter! > > When we hit the go button the program started. The torch found the > material. The pilot arc started and BAM everything stopped. Realtime > error in LinuxCNC. Cleared repowered the machine and nothing would still > work. That is when I realized the ground clamp was not on the cutting > table. > > It took out the two breakout boards and the mesa THCAD-10 board. > Everything else seems to have survived. I replaced one of the breakout > boards to see what all was damaged. The parallel ports are still working > and the stepper drives are still working so the damage was limited. > > So this serves as a warning to anyone that is using a plasma CNC machine. > > My next question is what can I do in LinuxCNC to get a message box each > time a program is being started to check the plasma ground. This will > help to mitigate this problem in the future. > > If there is no way to do it in LinuxCNC then I will add a piece of code > to the post processor we use in Fusion360 to add the message and a > program pause in the initial preamble of the file. > > John T., I ordered a replacement THCAD-10 this morning. I just want to > thank you for the simple privacy statement on your website. I think you > should change your terms to be "You pay me, I ship you stuff!" > > Thanks and be warned! > > Jim C. > > > ------------------------------------------------------------------------------ > Mobile security can be enabling, not merely restricting. Employees who > bring their own devices (BYOD) to work are irked by the imposition of MDM > restrictions. Mobile Device Manager Plus allows you to control only the > apps on BYO-devices by containerizing them, leaving personal data untouched! > https://ad.doubleclick.net/ddm/clk/304595813;131938128;j > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
