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Again, I'm only coming to you guys because you all have far more experience combined than I. I've actually had a Summa rep. come out and he says that I can't do what I want. I thought that maybe you guys might have a work around. Here's a picture of one side of the 12 x 12:

Negative, ghost rider. I make sure that the backing is not touched with the blade.

On long runs you can see that it's going to mess up because the vinyl will eventually ride up on one side of the vinyl flanges and then it'll eventually ride up on the other side. Things I've done: Thoroughly cleaned Replaced outside pinch rollers Slowed the cutting speed Rolled the vinyl out...

MikeD, Definitely non-adjustable. I just checked.

As far as I know the pinch roller's grip is not adjustable. I have no idea what you're talking about here:

I've tried that too, Stanton. Didn't work.

What's the width of your cutter? Mine will cut long lines it's just that it won't cut numerous long lines accurately. Mind you, these are lines that are 1/4 inch apart then 3/8 inch then 1/4 inch and so on... My plotter's only a year and a half old.

Stanton, Start / Stop point not matching up? SORT OF. Or, are the bars more narrow at one end than the other? YES. Have you tried unrolling material so the machine doesn't have to pull on the roll? (if that makes any sense?) THE MACHINE DOES THAT FOR ME.

True, but I'm only going off of what other professionals have told me and I wanted to get this forum's input. It seems as though I'll have to 3rd party it out. What would you charge, jfiscus and what's the widest you can cut on your sprocket and still stay accurate to line thickness?

I've called Summa Tech support and I did end up gettting my two outside pinch rollers replaced as they were making a squeaking sound. I have three total pinch rollers, by the way. The middle one doesn't put down the same amount of pressure as the two outside ones. Replacing the pinch rollers...

I've tried paneling in the past with terrible results, MikeD. You can see one panel from the next on the lines that are cut. There is a slight "dimple" that can be seen which will show up like a sore thumb once we sandblast the design.

My cutting strip seems fine. There is no visible wear or marks on it. I've also changed my cutting speed down to 4IPS and it still won't cut the lines exactly. I've spoken with Summa and a Fellers rep. and they've both told me that there is no way I could cut vertical lines accurately with this...

Traction fed/friction fed. Same thing right? I'm using pinch rollers. Three total and the D120 is a 48 inch plotter.

It's actually high performance paint mask that I use to cut. I've been using that vinyl and other types to get vertical lines but nothing is working. I can cut logos and fonts all day long just not lines. Our customer wants actual sandblasted lines not etch-look-alike. Thanks for the response...

I've had the Summa D120 Summacut series plotter for about a year and a half now. Prior to the Summa we had a Gerber sprocket fed plotter that just wasn't cutting right anymore. I purchased the Summa thinking that it could cut everything from text, logos and lines perfectly. Well I found, to my...