Having switched from a high frequency pilot are plasma cutter to a blowback start cutter I noticed my cuts were not finishing. I realized this could be an issue with the pierce delay setting and so I extended it to 2.5 seconds. I felt this considerably long delay would allow the machine ample time to start the air flow, fire the arc, and lower the z-axis before moving. Changing this parameter certainly improved the cuts, but they are still not quite meeting at the stop and start points. Increasing the pierce delay from one second to 2.5 made an improvement but it didn't entirely fix the issue. I tried upping it to 3 seconds but it seemed to get worse. Is there a way to add a delay at the end of the cut in Open Builds Cam? Even with a 2.5 second pierce delay the torch seems to start travelling as soon as it reaches the cut height. I have the z-axis plunge rate at 300 mm/sec, the pierce start height at 3 mm, and the cut height at 1 mm. My travel/safe height for the z-axis is set to 10 mm. Any advice?
Correct, once at cut height its time to start cutting! It pierces at 'pierce height'. Wait for 'Pierce Delay'. Thats the "pierce process" after all. Then moves to Cut Height and gets on with business. No extra delays needed. Failure to pierce within the piercing process could be incorrect pierce height, incorrect amperage for the material thickness, worn consumables, or air pressure far too low (check regulator guage while its blowing, setting pressure for the closed valve is incorrect, set air pressure while its blowing - otherwise it will drop once flowing)
Seems to be working better now after some tweaking. Thanks for the suggestions. I purchased a DS-55 Pro Plasma cutter with blowback start made by YesWelder off Amazon and it has an air switch that allows one to let the air blow while adjusting pressure. Nice feature. Thanks again.
