How to cut thick material from edge

rodw wrote:

Yeh, we knew what you meant. I had to find your manual. I am surprised they list edge start for material that thick but the proof is in the pudding

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.

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.

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.

Well I do know some guys pre-pierce with magnetic drill where they need an inside cut