Sports injuries are also a frequent cause of a pulled back muscle, especially with sports that involve twisting (such as golf), or any types of sudden impact or jarring motions. In This Article: 1  Pulled Back Muscle and Lower Back Strain.
Acrylic painting tips on gels and modeling paste. If you like to play with extra-special effects, try the modeling paste or Gel medium Gloss (Liquitex). Modeling paste is for creating a heavy and shaped body of paint on the underground layers. It needs a solid background, like a canvas or painting board.
The acrylic primer protects the painting substrate from damage from paints and solvents. This is more important for oil painting than for acrylic or other media. Oils in oil-based paints can corrode and damage the threads of canvas or linen or eat into the wood of panels.