Punching bag comes in 2 categories filled and unfilled. If your punching bag is unfilled, follow below mentioned instructions.
To prepare a punching sack, you need to have the following:
An empty shell
Saw dust / Rags
Sand
Chains to hang the sack
A net or something of sorts, to filter saw dust
A ceiling with a hook in it
For Beginner the weight of sack bag should weigh approx. 50 lbs and sack bag should contain 100% Saw dust.
For Passionate Starters the weight of sack bag should weigh approx. 70 lbs and sack bag should contain 80% Saw dust and 20% Sand.
For Intermediate Starters the weight of the sack bag should weigh approx. 80 lbs and sack bag should contain 50% Saw dust and 50% sand.
For Skilled players the weight of the sack bag should weigh approx. 120 lbs and sack bag should contain 80% Saw dust and 20% Sand.
For Veteran Players the weight of the sack should weigh approx. 180+ lbs and sack bag should contain 100% Sand.
Procedure to prepare punching bag:
Empty the contents of the saw dust bag and the sand bag onto the ground under the sun.
Filter the saw dust, as it contains thick wood particles, stones
Start filling the punching bag with some sand first in all cases
Then start pouring in the saw dust, you will have to make adjustments to the bag after every kilo of saw dust you pour in the bag, since it needs a little shaking to settle
Fill the bag by putting in 4:1 ratio of layers of saw dust and sand.
Hang it under a ceiling, if you live in a building made out of concrete then it must have iron rails running through it, dig one out and hang the bag without worrying about the weight.
If your home is made out of wood, you will need a little more effort, i.e. place a crossbar on the roof or the first floor in case you have a multistory house and put a hook around it, to distribute the weight evenly.
After hanging, oil the punching sack to prevent it from weathering.
