Graphtec FC9000 cutting Laminated reflective vinyl 15mil thick

[gpslitt]

I have graphtec FC9000. Started cutting laminated reflective vinyl 15mil including backer. It offsets 1/8" the outer cut outwards on second last cut.

Length of cutting decal is 40-42"

Outer pinch rolers, strong, inner two on medium force

cutting speed 20

if i change material to anything less than 12 mil, all good.

using 60 degree blade

No offset changed, evrything same, just material is thick

Any help is really appreciated,

regds..garry

 

[signheremd]

If it is a printed piece, be sure to put masking tape around the cropmarks so the eye can read it correctly - not unusual to have reflective or other shiny vinyl cause a miscut due to light causing the unit to see the cropmark off. I would also increase the pressure on the middle two pinch rollers - weight can cause slight slippage which is more noticeable near the end.

 

[gpslitt]

Thnx signheremd

yes its printed, I dont have masking tape.

I tried printed another smaller sheet (30" length) and 25" wide

I increase the size of marks from 0.012 to 0.02 inches

I change the Scan mode to 4 and it cuts a little better but didnt do a perfect.

i even check the mark scan offset by priting on same reflective sheet and laminate it too, just added 0.004+ to x axis and -0.0004 to y axis to move cut to middle of printed pattern.

IS anybody aware of registration marks specs for scan mode 4, because i use the marks 0.012 thick and 0.5" wide, but not scanned in scan mode 4

thnx again for replies

 

[signheremd]

You can use strips of plan vinyl (white) to cover the reflective around the cropmarks. Problem is the reflective nature of the vinyl you are cutting - the electric eye has a hard time making an accurate reading due to its light being reflected back at it. Leave the printed black cropmarks, just put 3/4" wide vinyl on all sides of the marks (up against the black) so that it can read the marks correctly. You have to do this for mirrored vinyl as well. For the machine, it is like trying to shine a light into a mirror and getting your eye close to it - you are blinded...

 

[gpslitt]

Just to add, I increased the width of mark, size of mark for better detection. But the problem remains the same.

I will try to explain the problem again in a picture attached.

Seems like media is moving and dragging the blade, because when its dragging more than a feet, I pause the machine and it give me y axis hardware error, which normally comes when i forcibly move the cutting assembly.

if you see my cutting , it has four vertical and 25 Horizontal lines, its cuts all perfect (If the MARK DETECTION is wrong, it should skew the entire cutting GRID, NOT just last OUTER RECTANGLE cut.

After cutting all the inner line, it start cutting the outside rectangle and on the third cut, which goes from bottom right to top right, that is the one getting offset by 1/8" and same with the last from top left to top right.

Anybody have any clue, why's that?

regds..Garry

 

[Graphic Extremes]

you could try reducing your cutting pressure and cut the item twice.