I was quite surprise that after actually ordering from you twice that there was no technical data sheet or coshh document with the materials purchased. I am a new user of this material and have had to do a lot of research. Luckily i am a Health and Safety professional and was very wary of it in the first place. Also probably just me but i am having some bad results with the projects i have been attempting although trying to follow the instructions on ratio from the tub and i have been using digital scales to measure and the other method of precision measuring with quality graduated cups and syringes. Results have had cracking bad shrinkage from the sides and bits just not setting even after very thorough mixing and even between two pots. Biggest issue is the amount of air bubbles no matter how slow or fast you mix the resin. And tips or instructions would be very much appreciated.