Update: purchased the GFP 355th, and after getting stuck on some super basic steps, we have run some jobs through it and they look great. not comfortable with the machine yet though. These four clutch/brake knobs on the sides are completely new to me. Our old cheaper one didn't have any of that. Any tips on how those work? In one of the very limited GFP videos the tech shows how he likes to have a little "bag" between the backing and the idler bar while laminating, so it's not too tight. I saw mine was running a bit tight, so I loosened the knob for the backing takeup, and sure enough a little bag appeared. but then it grew and the backing almost started to dip too low towards the rollers. I tightened it a bit, and just went back and forth a little until it leveled out. Still not really sure what is happening when turning these knobs. Any insights would be appreciated.
Also: Never used a laminator with a heating assist. How does that work? the temp dial goes up to six. Is there a specific media or laminate, or room temperature, or other context that should dictate when to use heat, and what to set it to? Not a lot of info in the manual or gfp website. I want to just play around with it and try different stuff, but we also have some expensive material that needs to be laminated this week, and my confidence with this thing is just not there yet. Thanks!