Help cutting reflective using mimaki fx160cg plotter

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I am printing on oracal reflective material using a hp design jet L28500 printer and mimaki fx160cg plotter. My question is I'm not having trouble printing on reflective, but having trouble plotting it using illustrator fine cut. When I get it printed and run through the steps to read the registration marks to tell plotter how big a piece to cut. Will sometimes read the marks or most of the time just pass over it and error out. It never finishes reading the marks. Is their a way to get plotter to read the marks so it can contour cut the what I want. Am I missing something or is their an easier way to go about cutting reflective after I print on it. Any help would greatly be appreciated.

thanks in advance

 

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put some matte clear tape over the registration marks

 

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put some matte clear tape over the registration marks

Thanks.. I didn't even think about that. Will try Monday.

 

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I tried putting matte lam over the registration marks and still no go..went as far as putting premask over it to and drawing making marks and still no go..can anybody help me with this problem.

Thanks