registering a large vector for cut out.

[rej]

I have a sign shop who sent me a part to cut out. just the outside perimeter. its a printed piece of vinyl on dibond.

it is on a 4x4 sheet and the vector is fine. i'm thinking i can set the center of my bit to the lower left corner, my datum, and cut.
my plan is to put in a vbit, center to the corner, set x and y, then change to my other bit. cut to the outside of the vector.
sounds easy enough.
i guess the key to this is to have the material perfectly in line with the machine travel.

[FixitMike]

Make a quick toolpath that moves the bit from the start to the diagonally opposite corner to double check the positioning. Air cut, of course.

[martin54]

Yer your way of working will be fine as long as the Signshop have positioned the graphic accurately
I do that sort of think quite regularly so have a dedicated start position already saved as a work co ordinate for my control software but using a v bit works well for setting the x y zero position if you don't have anything already set up.
Mike has suggested checking diagonal corners which will work if the board has been cut correctly, I normally just check the bottom edge of the board with the machines x axis travel. As Mike has suggested run an air cut first just to make sure everything is lined up correctly before committing yourself to an actual cut

[rej]

luckily the sign shop has placed the design on a backdrop of 4x4 feet. I do mark a 90 degree corner on my spoilboard.
I'll know tomorrow how it works out and I'll post a pic or two.

[rej]

it worked out great.