I haven't tried it yet but I did notice that the angled blades could use a it of a sharpening which should give them an easier glide through the silicone.How well did that work for you? I bought one for my re-sealing purposes and I did my 75g with a regular razor blade but tried out the scraping tool on my 20g but I didn't like it because it didn't ever really cut into the silicone, just bounced off of it.
