pierced pattern not piercing

[Rkoonz2]

I just carved a 2" deep pattern with the 1/8" long bit... in the program you can see that it is pierced on the back of the board, but when it carves it is about 1/4" from the back... anyone know how I can get it to cut through?

[bergerud]

It would help if you could post the mpc.

[Rkoonz2]

It would help if you could post the mpc.

here is the file
Owl group line.mpc

[fwharris]

MPC looks ok. Did you have your board in a sled/jig and if so when the machine was finding the surface did it touch on the sled or the board? If on the sled is that surface higher than the board?

[Rkoonz2]

MPC looks ok. Did you have your board in a sled/jig and if so when the machine was finding the surface did it touch on the sled or the board? If on the sled is that surface higher than the board?

I did have it in the UCB, the board was higher then the edge of the sled by about a 1/4... I jogged to touch and watched it touch the board...

[fwharris]

Trying to think about how the pierced carve start up routine goes, does it also check the board thickness by touching on the sliding plate and far board surface? I think it does..

[Rkoonz2]

Trying to think about how the pierced carve start up routine goes, does it also check the board thickness by touching on the sliding plate and far board surface? I think it does..

it does some up and downs before it finds the surface, but with the long bit it does not go to the sliding plate...

[bergerud]

I think it could have to do with bit optimization. I make pierced outlines when I do things like this. Look at the third owl.

[Rkoonz2]

I think it could have to do with bit optimization. I make pierced outlines when I do things like this. Look at the third owl.

It won't let me open it... I have designer 2.007
how do I do a pierced outline?

[bergerud]

Try this. I use outline and then path offset to create a slightly bigger flat carve region.