Adjust your fence to match the line you drew on the bandsaw table.
Band saw cutting crooked.
Turn on the bandsaw and begin to cut that board following the line as perfect as you can note.
Once it starts to cut crooked the only fix is a new blade.
As an analogy consider the case of cutting a steak with a steak knife.
Remember that you need a minimum of 3 teeth in contact at all times for reasonable blade life.
Reduce the feed pressure use a thinner blade and set the saw to a lower setting check the wheel alignment and ensure the diameter is correct.
When the band saw cuts crooked a dull blade improper feeding loose blade tension or not using a work piece guide could be the cause.
Unsurprisingly a dull blade will not cut as well as a new sharp blade.
Freehand not with the fence.
Stop the cut about halfway through the board.
Lets take a look at a crooked cutting saw and make it better.
Before you just change the blade concider the following things.
Parts with crooked cuts make welding difficult to say the least and as a result welders often must use a filler or additional welding wire to fill the gap left by the uneven edge.
I have an older delta brand vertical dry cut band saw that just doesn t seem to want to cut straight or square unles i put a line on a piece and follow it by hand eyeball.
Listen to the saw if there are dull sections or missing teeth it will tell you.
Use the rip fence or miter gauge to guide the work piece uniformly through the cutting blade to make straight cuts.
When a chainsaw cuts crooked there are a few things you can do to fix the problem.
This should take care of any breakage issues you were having.
When band saw cutting i beam square and round tubing straight cuts are crucial to preparing the part properly for welding.
Related to selecting the correct blade is making sure it is sharp.
This can be caused by a dull or damaged blade insufficient band tension or an incorrect feed or speed.
I have tried adjusting all the wheels in the guide above and below the cut they are small bearings and sliding guides as close tight as i dare run them.