by stoneyboy »
Thu Dec 11, 2008 4:22 pm
macw,
It's a regular problem with these guns, you need to buy some good quality building sand (even fine grains), cement and some hydraulic lime. All these components need to be fresh (so they are free from any lumps) aim for a 6:1:1 mix but you may need to add more lime to make the mix useable.
end