Another plasma component...

Phill,

Changing the delay setting to 0.1 fixed the problem,

But as Franklin wrote should the delay be before the z axis raises up? That would make the feature work like it should in my option.

Grotius wrote:
Do you mean ignition time out?

I am not sure, this is where plasma cutting seems to have a real problem, it depends on where you read something as to what something is named...
What I mean is turn the torch off at the end of hole (which was also the start of the hole) so X/Y can continue for about 4mm before the Z axis raises.

Edit: Number 3 on this page

thefabricator03 wrote:
But as Franklin wrote should the delay be before the z axis raises up? That would make the feature work like it should in my option.

So when we get a M5, turn torch off (if not already off), stop for n seconds then raise the Z axis.



I have a good project for someone:
Come up with a set of naming conventions for LinuxCNC so at least we know we are all talking about the same thing.

Phill, once you get this finalised, the Plasmac GUI and docs will be the gold standard plasma dictionary!

Yes any delays should keep the torch at cutting height until its over otherwise there is no point keeping the arc running. The intent is to let the trailing arc on the lower side catch up to the end point.

I'm wondering if it should not be able to be changed with M67/M68 from gcode? Different materials and different cut types (holes vs outside cuts might need different delays.

What does Stefan think ? I'm not really the one to make a call on that.

rodw wrote: Different materials and different cut types (holes vs outside cuts might need different delays.
.

I do not think we need different delays for different cut types, Unless we are going to turn PlasmaC into sheetcam! If we were to do that then that would help. I over cut my holes and outside cuts. Just makes it easier to pull the finished part out of the skeleton and get the center slugs out of holes.

I feel that just having the delay work as it should by leaving the z axis at cut height until the torch has finished will solve 98% of all problems.

Dont worry Phill, with all of the testing I am doing with your baby we will have it at a industrial level in no time! I am averaging about 2 full sized sheets a day, thicknesses from 1.6mm up to 25mm and everything in between. Also cutting small parts and very large parts.

One thing that is out of this scope of this project and even physics I think would be if we could eliminate taper of air plasma parts. That would truly be something worth working towards if possible! Looks like a Hi Definition unit is in my future. Problem is they start at the $40,000 price range.

90% of the parts I cut dont need to be perfectly square edges but for the other 10% having the part come out with square edges would save a bit of grinding.

rodw wrote: Phill, once you get this finalised, the Plasmac GUI and docs will be the gold standard plasma dictionary!

do need to use a standard nomenclature though

how are you controlling the torch off before the end of the overcut?

I presume that the overcut is set in sheetcam??

how do you tell the torch to turn off early? (I use the equivelent of m63 Px)