Slim:I have several hones but also use and like film. I recomend 3M Imperial Microfinishing Film (aluminum oxide) 3 mil a fast cutting film I use before the blade is ready for the polishing
film. I'm not sure where I got it. Next i go to film I buy from Tools For Working Wood; 1st 3M Micro Abrasive Film 1 Aluminum Oxide PSA which is 22,000 grit. Their part # is ST-MAF.01APSA10. If i really want to get crazy I then use #M Micro Abrasive Film .3 Aluminum Oxide-PSA, part # ST-MAF.003APSA10 which is 80,000 grit. I use these last tw0 for about 3 razors then change them out. I put them on plate glass. If you care to send me your address I will send you some so you can see if these fit you expectations.