Working on my first project using baltic birch plywood. I've just been a hardwood kinda guy what can I say. Anyway, stack cutting 2 pieces of 1/4" BB was using FD Polar #3 and #5 blades. Saw speed 800 spm. I seem to be having excessing blade wear compared to the items I've done with other wood species. Seem as if the blades get dull within about 8 or 10 inches of linear cutting. Have tried adding packing tape to top of pattern with little or no change in blade wear. Looking for suggestions or confirmation that such is life with BB.
I to am a hardwood guy but do use some baltic birch. I mostly use FD regular skip tooth blades and I don't find the dulling excessive. I think you will find that when cutting any kind of plywood has a tendency to dull blades faster. I don't know why but it may be because of the glue or th type of material they are using for the plys.
I stack cut a lot of baltic birch ply but I don't have any experience with the blades you're using. I use FD-SR's, typically #3's or #1's and haven't noticed any excessive dulling on them. Plywood will dull tools (whether a scrollsaw blade or a table saw blade) much more quickly than normal hardwoods due to the glue in the layers.
I use FD blades, and something is wrong if you are dulling the blades in 8-10 inches. I stack cut all my pieces 4-5 1/4" and don,t have that problem. IYou mention that you are cutting at 800 rpm, not sure but I cut at 1700 rpm might trying to increase the speed.
Thanks everyone for the information. I also found an old response to a similar question and the suggestion was higher speed and FD TC blades. I switched the speed to 1200 spm and used a FD TC #5 blade - problem solved.
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