Hi. I recently bought the Fein Multimaster. I was very dissapointed. The blades only do a good job when they are sharp. This seems to last about two minutes and then they are more likely to screw the job up than anything else. I spoke to my supplier and he cheerfully said "Oh yeah, a lot of customers bring in twenty or more blades at a time for sharpening" At £8.50 a sharpen? Before or after they have messed the job up? Anyone else been less than pleased with this tool? Thanks.