A: Just the bag of texture. They cost a little under $8.
A: You need to adjust the pressure on your compressor. turn to 130 psi and mix your mud thin. you will be surprised on the results.
A: I've used this gun to texture ceilings that I've patched for customers without a problem. What I like about the gun is that you squeeze the bag of drywall mud to control how heavy you want the texture, so you aren't depending on the spray guns gravity feeding mechanism. I would highly recommend this solution for the problem you are having.
A: No but I've refilled the bags with my own mix. The bag can be re-used or you can use an old squeeze applesauce bag!
A: Your material would have to be really thinned out and be prone to drips, runs and wallboard paper bubbles for the gun to pull the material up the hose IMHO.
A: Yes. The bags contain just 20 oz of pre-mixed texture ("mud"), cost eight dollars each and cover minimal area, They are sub-optimal from a cost perspective and it is tricky to deliver a consistent flow of mud, regardless of the marketing hype. The gun itself is hardly cheap at about $50, but can be made to perform well. I modified my texture gun as shown in the picture below. The feed line is 1/4" ID, 3/8" OD vinyl tubing (gently warm the last inch or so over a low gas flame or with a hot air gun and them shove it onto the barbed brass inlet tube on the texture gun). The silver knob rotates a potentiometer, connected (via low-voltage, two wire copper cable) to a PWM (pulse width modulation) speed controller which, ultimately, in my custom system, regulates the flow of mud along the tube. Different textures (e.g. orange peel) can be created and matched by carefully controlling the viscosity of the mud, the air pressure, the air-flow (carefully remove the NPT connector from the gun and insert an intervening 1/4 turn ball valve), the mud-flow rate and the distance from the target drywall.
A: I doubt it. Part of the process is to control the flow of the material by squeezing the bag.
A: I don't think so because you pressuring the bag is what makes how much goes out .