Question about blade orientation

[Pop-Pop]

I was making joints in window mullions and noticed that when I used the scroll saw (Dremel 1680) the cuts were not at 90 degrees in the vertical plane. On checking the blade wth a square against the table I found the lower edge of the blade was about 1/8" further back than the upper edge. Does anyone know if this is normal for a scroll saw? Is there an adjustment that I am not seeing? Any input on this will be helpful. 

[Bill WIlson]

1/8" sounds like a lot, but some saws cut in a rocking motion, so at any point in the blade's travel, up & down, it may not be perfectly 90 degrees, front to back.  You may be able to turn the motor of your saw, with a screwdriver (look for a slot in the end of the motor).  If so, you can check for vertical cutting motion by taking a 2" machinist's square, place it against the blade and turn the motor manually.  Watch carefully as the blade moves up & down to see if it exhibits a rocking motion during the up & down travel.

You can also check this with a thick piece of wood, 1 1/2" to 2" thick, depending on your saw's capacity.  Make sure it has a square edge.  Turn the saw on and gently push the edge of the wood into the blade.  Don't push hard, just enough to make a slight kerf on the edge.  You should be able to tell if the blade is cutting to the same depth, top & bottom, by examining the kerf. 

[JTTHECLOCKMAN]

They do not make that saw any more so I could not find any specs on it to see if there is a way to tame the aggressiveness of the cutting action. All saws will rock back and forth with some being more aggressive. that is what you are seeing. You can try the above suggestion but just do not know how to correct it if it can be.