This is a tutorial to make a cheap and simple Vacuum chamber from a mason jar. This can be used to stabilize wood.
Step 1: What You Need
You will need:
A canning jar with a steel lid,
A soldering iron,
A few centimeters of Brass pipe,
A drill bit of the same size of the brass pipe
Step 2: Let's Begin
Drill a hole through the lid and sand some of the paint around the hole away for soldering
Step 3: Solder the Brass Pipe Into the Hole
Solder the Brass pipe into the hole using some solder and the soldering iron at about 35°C (662°F)
Step 4: Finished
Now just screw the lid on and hook it up to your vacuum pump (I use a modified bike pump which reaches up to 20mbar of absolute vacuum pressure)
If you want please consider voting this project on the contest I am participating in
Step 5: Safety
I don't take any responsibility for damages or injuries for example if the jar implodes. if you are using anything bigger than 500ml as a vacuum chamber, please make sure that the first time(s) you try it, you put it in a container or use safety gear in case it implodes to me minimize the risk of injuries.