Problem cutting Circles

[gadgetsboy]

Hi
I have been using my Refine mh721 laserpoint to cut flex for tshirts with no problems and recently offered to make a friend a house for sale sign out of some vinyl i had been given (Oracal 651) But when cutting the vinyl it stretchs and bulges and all circles end up ovals or spirals. I then tried some banner vinyl i had (JAC Serisoft 3 Year Banner Vinyl) but got the same results. Also no matter what pressure i set the cutter rollers too they leave a roller track on the vinyl. I have tried adjusting the blade pressure but still the same. any one any ideas??

Mark

[gadgetsboy]

I started by putting a new blade in and that made things a lot better but still left the vinyl bowing and circles a little egg shaped so i then slowed down the cutter to 260 and bingo circles were circles again

[Stitch Up]

Well done Mark, these sort of problems can be so annoying.

John