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To the O.P,If you have a woodcrafters store near you,Take the blanks in,they will run them thru a bandsaw for nothing.

As Neil says,is just a matter of removing material, with some 60 grit you can get the material down in no time.
No bandsaw needed.

Heres a visual.
Pce of oak exactally 1/4 in. Bandsaw cut (4 TPI Laguna Blade) on the rgt it is exactally 1/8, .125, on the left it is .077.
163704

No reason to turn something simple into an ordeal,bandsaw a 1/8 in pce, work from there,easy stuff.

bandsaw blade may be .025 on the non-cutting side,but when you consider the kerf on the cutting side it is far more.
I can cut one 1/8th pce out of 1/4 no prob,the other will be far less than 1/8th.

I can mill them to size,1/8 in.? cost of shipping only,tough to cut them in half,you would lose half the materiel .
You have .250,you lose .080 the the bandsaw.