If you are still seeing burn marks try giving your saw a tune up.
Saw blade wood burn.
A dull blade will make it hard to cut quickly and the slower the feed rate of the saw the more friction against the wood and the greater the likelihood of scorch marks.
First check your blade.
Blade height affects the angle that the teeth hit the wood.
As wood pitch builds up on the surface of the blade it will be more likely to bind up and scorch the wood.
Pushing the stock through the saw too slowly is a common cause of saw blade burn.
When too much friction and burning occurs it can leave you with a burning smell or smoke that is often enough to set off the fire alarms in your workshop.
5 blade height in one forum i read where a fellow kept getting burns on his cherry.
Three minute video showing how to quickly and easily clean your table saw or circular saw blades with a simple cleaner.
Dirty or dull saw blade.
The heat will scorch the wood as it passes through.
Wood burns when it is fed too slowly goes past a dull blade grabs the back of a blade when it moves while being cut as with case hardened or reaction wood or rubs against a heeling.
Next make sure that you are cutting with a quick continuous motions.
The blade manufacturer suggested he raise the blade height and this worked in stopping the burn.
Do what it takes to avoid burning by setting up your saw correctly keeping your blades sharp feeding the wood at the proper speed and using a good splitter.
Make sure that the blade is sharp clean and free of pitch.
Dull blades obviously make it much harder to cut wood quickly and as we ve already discussed a slower feed rate increases the chances of the wood getting burned.
A dirty blade can also affect the cut.
Dull blades are much more likely to scorch and burn wood because the teeth are not cutting the wood fibers effectively.
Burn marks on the cut wood result from too much heat on the saw blade.
It could be something as simple as the blade being either dull and in need of a sharp or dirty and in need of a clean that s causing it to burn the wood.
Too low and you make your blade work too hard causing friction.
The heat will scorch the wood as it passes through.
Make sure that the blade splitter and fence are all aligned exactly how they are meant to be.