Need Help Summa S2t75 Material Differences

[Tatonka]

We got an S2T75 a couple months ago and I thought I had it dialed in to cut great. However, I'm finding out that some materials must be slipping or something when it's feeding them. If I do a length calibration on a standard soft vinyl we have here, it measures out exactly to 900mm. However, we actually paint a vinyl, and when I do a length calibration on that material, it comes out about 5mm short. Another material, 3M Di-Noc, comes out about 3mm short over 725mm.

Does there need to be a different configuration for each material, or is something else weird going on?

 

[depps74]

I've had similar problems with my Summa!! Just bought it 1 month ago! Trying to get my money back now actually. Mine is brand new only 1 month old and out of the box it was putting notches in circles and any letter with a curve. Summa said that some materials such as Oracal 631 (the most popular brand and the only one I use) tends to slip or "shit" during cutting. I been working on an old Signwarehouse plotter for 10 years and this never happened once. ORcal laughed when I told them Summa's explanation. If you want contact me directly as I am in the process of getting my money back, if you paid with a credit card you may be able to get a refund too, the more evidence I can provide that their machines are broken the better.
you can email me direct here.

 

[AF]

For the OP, vinyl changes size with temperature. It is possible that the length differences you measured were caused by the material equalizing in temperature during the calibration.

 

[FrankW]

It have not much to do with slipping. Depending of some media properties the cutting length may vary. It is the same issue with a lot of roll printers or cutters.

With a S-Class Plotter you could save up to 8 media configurations, every one with a separate X-length calibration. And for easier access they can be named through Summa Cutter Control.

 

[Tatonka]

I found out I was just doing the calibration wrong. I tried to double check it by doing it again and remeasuring, but that's not a correct way of doing it. Once I cut once, and measured it accurately, it's consistently been cutting perfectly. It's been a great machine once I figured out the quirks.

 

[ProPDF]

on the 30in summa sometimes you need to buy additional pinch rollers

 

[jayhawksigns]

It's been a great machine once I figured out the quirks.

That is a Summa in a nut shell. It is a rock solid built like a tank plotter, but, at least in our case, there wasn't on site setup and training so there were a lot of things I had to figure out on my own. We probably waived training on our second unit since we already had been running a Summa but with all the capabilities that these units have either take the training or read the manual twice and then keep picking up stuff while you run it.

 

[jessica pappalardo]

I've had similar problems with my Summa!! Just bought it 1 month ago! Trying to get my money back now actually. Mine is brand new only 1 month old and out of the box it was putting notches in circles and any letter with a curve. Summa said that some materials such as Oracal 631 (the most popular brand and the only one I use) tends to slip or "shit" during cutting. I been working on an old Signwarehouse plotter for 10 years and this never happened once. ORcal laughed when I told them Summa's explanation. If you want contact me directly as I am in the process of getting my money back, if you paid with a credit card you may be able to get a refund too, the more evidence I can provide that their machines are broken the better.
you can email me direct here.

pls call me 909-418-1324, I am having an awful experience with my Summa Product and have been in touch w/ an attorney regarding damaged printers they sell.