Sawdust briquette press - GIF

**basil3w** · May 13, 2021, 01:23 AM

What do they add to the sawdust to act as a binder?

**DIYSwede** · May 13, 2021, 03:04 AM

Originally Posted by basil3w

What do they add to the sawdust to act as a binder?

Water only (inherent moisture, or even added).
3rd world recipe: 1 pail of water to 2 pails of sawdust. Leave overnight. Press. Leave to dry/ cool.

When pressed, the water gets hot enough to make the polycyclic biopolymer lignine in the wood to act as a binder.
If the briquette is pressed too hard, and not left to cool it could even set itself on fire. Has happened when palleted too early.

As answered in this post: Briquette press - GIF