I needed to use one more clamp for making one project, so I decided to make one out of aluminum.
Step 1: Making a Pattern and a Mold
Using foam cutting a pattern of a clamp and making a green sand mold/
Step 2: Melting Aluminum
Melting aluminum and start casting
Step 3: Open a Mold
When the mold becomes colder it's time to open it.
Step 4: Processing the Clamp
Drilling, taping and welding
Step 5: Result
The clamp is strong enough and works how it was planned.