One doubt I have is: will this kind of cutter work without problems with polyester film? If I buy something, it should work with polyester film as well.
Yes, it would work fine. I have used a similar cutter for untearable and thin Ilford surveillance film. Very thin film needs a tight cutter, otherwise no problem at all.
I bought one of these, too, and it works well, but the guide rails are very close for the film format, and doesn't have enough clearance to feed sleeved film through (I get my film from the lab sleeved and uncut.) So I have to un-sleeve, cut the film, cut the sleeving, and re-sleeve.
Anybody know of one like this that can fit sleeved film?
Kaiser diacut 1. I tried it today (film with acetate base) and I am very satisfied, the cut is very precise and easy. Waaay better than using scissors. Farewell, stress