How to cut thick material from edge

tommylight wrote:

alexandrub wrote: The question is how to start cut from the edge not with piercing.

Manually, there are to many variables to be able to automate that.
Jog the torch to the edge, set the offsets, start the cut by pressing F9 or by adding M3 at the top of gcode for that part.
Rinse and repeat .

Ok, but i do nit want to cut just a straight line. I want to cut an model, and i can put the lead in outside the material but arc ok report that arc is not ok .

I do not abuse cutting so thicknes...just some piece.

Set the "maximum velocity" slider to the same as cut speed, press f9, then run from here from the beginning of the gcocde.
In this case, remove the M3 in gcode.
You can cut any shape or form as long as you start each one separately.

alexandrub wrote:

tommylight wrote:

alexandrub wrote: The question is how to start cut from the edge not with piercing.

Manually, there are to many variables to be able to automate that.
Jog the torch to the edge, set the offsets, start the cut by pressing F9 or by adding M3 at the top of gcode for that part.
Rinse and repeat .

Ok, but i do nit want to cut just a straight line. I want to cut an model, and i can put the lead in outside the material but arc ok report that arc is not ok .

I do not abuse cutting so thicknes...just some piece.

Could you not just butt up another piece of steel next to your part and the start the lead in from off the part?

You need to have your torch just on the edge so when it starts cutting it is cutting steel not air, I do this for line cuts to sever sheets by pulsing the torch and the air will slash water from my water tray up. I then jog the machine until I find the perfect spot to start the cut.

thefabricator03 wrote: You need to have your torch just on the edge so when it starts cutting it is cutting steel not air, .........

Even having the torch about a millimetre or two inside the material works ok, it just sprays sideways a lot.
Centring the torch at the edge is easy, you just have to know from what side to look at it.

tommylight wrote: Even having the torch about a millimetre or two inside the material works ok, it just sprays sideways a lot.
Centring the torch at the edge is easy, you just have to know from what side to look at it.

Yeah that is true. It just comes down to the operators experience with the machine. Starting near the edge even if in a couple of mm sure makes starting a lot easier.

All this talk of trying out the book max specs of the machine has me thinking of trying out 60mm plate, just need to find a use for it.