I've not used weber set spf for a couple of years, but ctd recently opened in Preston (finally!) so all giddy with excitement I opened my account and went and bought half a dozen bags. Now I really wish I hadn't! It's terrible to use. Sure, it sticks really well. But it's stringy and claggy. Open time is poor and for a slow set, it's going off in the bucket in little over an hour (and it's only about ten degrees c in here). Maybe I've just been spoilt using tilemaster lightweight, kerakoll bio gel etc. Anyone else use it and like it?!