Bought material, the journey continues.

I hope everybody is well.
I want to build a part for my excavator quick change coupler.

The thing on top of the shovel.


So I made it simple & bought flat steel 10mm & 12mm and the round part, cut in length parts.


The 35mm holes I tried to do with my plasma.... The drawing I did in Fusion 360 with the post processor plasmac.
Coordinates 0x0 was bottom left corner of the 100x255 plate.

The crosslaser was handy to adjust the material.

The breakaway switch test was done a view times :laugh: unfortunately on top there was on piercing material which I think with longer piercing delay an additional 7 1mm pierce hight I got rid off.... Maybe :huh:

Of course I had to start it a view times hence the result suffers beauty.





I was not sure if I would juse a water pan... Now I am sure I will... :sick: Thick material makes a lot of smoke.

What is the minimum debth of such a water pan. Got not so much space.

In rounds I made the lead in 90degrees and 10mm...is that wrong? At the end the torch dived deep in the hole.. But came up eventually.

since I was overwhelmed from watching and observing I had to make a movie of the screen...here a screenshot


how can I clear the preview screen after a run?

Ahh as well a view times the machine claimed that the float switch activated which it was far away... Maybe voltage disturbance.. But after a view times it disappeared to happen.

Any hints opinions welcome!

CNCFred wrote: how can I clear the preview screen after a run?

In the middle of the screen above the 3d view, there is a broom for cleaning.

Thank you I see... Now :whistle:

What is the minimum debth of such a water pan.

In rounds I made the lead in 90degrees and 10mm...is that wrong? At the end the torch dived deep in the hole.. But came up eventually.

CNCFred wrote: Thank you I see... Now :whistle:

What is the minimum debth of such a water pan.

I make them 10 to 12 CM deep, 5 CM high slats, another CM goes under the slats ( L shaped metal profile with cuts on one side at each 5 cm length, 3mm wide), so that makes it roughly 6cm for the material to sit in and leaves 4 to 6 cm above to minimize splattering of the water when cutting near the edges of the table.

CNCFred wrote:
In rounds I made the lead in 90degrees and 10mm...is that wrong? At the end the torch dived deep in the hole.. But came up eventually.

Tom will know best about the water pan depth,

The lead ins. 90 degrees and 10mm is fine. I do the same on similar parts with no issues. The torch is diving at the end because it is cutting over a area that has already been cut. You need to turn off the THC towards the end. I have mine set that 14mm before the end of cut the THC disables.

thefabricator03 wrote: Tom will know best about the water pan depth,

Nice timing !
Also forgot to mention, pan has to be at least 5 cm wider on all sides so there is enough room for the torch.

I would make it as big as the table? But the depth.. Would 3cm deep be enough?
I plan to use concrete reinforcement metal grid as surface to lay the metal sheets on.

Still a lot of questions. In plasmac how an I start at a definite gcode line again?

What amperage machine are you using? A large more powerful machine will have a deeper penetration. But you might be able to get away with 30mm on a small machine.

75 Ampere Max it displays... OK.. Thx

You could try one of the hole cutting methods that come with PlasmaC, they both disable THC.

linuxcnc.org/docs/2.8/html/plasma/plasma...le_cutting_automatic