Ordered a m14 mix m8 off ebay to use, i have been in the plastering trade 15 years and i can mix plaster better with a stick!, not capable of mixing more than half a bag! Should not be advertised for use by pro's i spread quicker than it mixes and it mixes badly, bg plaster fail! Drywall adhesive fail! Knauf plaster fail! I have never used such a incopetant product in my life!