removing domestic asphalt floor sealing

[Unregistered]

The black asphalt covering approx 12mm thick over my house concrete ground floor typically used 30 years ago. I want to cut a strip out of it (not the concrete underneath) and wondered if anyone has used the fein multimaster with the cardide saw blade on this material. Total length of cut about 16 metres. It's a bit expensive to buy the tool and blade to try it out.

 

[DHTiling]

I had a similar channel in my ashphalt floor but not that length..anyway i used a grinder with diamond wheel in and kept a hoover on it whilst cutting..or there is black crap all over the place..