Phillip,i thought this might be you
nice that your posting again
cant say i really have any tips with spalls
i just get lucky sometimes,and i never post pics of all the ugly ones and the ones that dont turn out well
i still struggle with getting some materials thin enough
slabs i can pretty much do what i want with.like snapping them in half lol
other than that i have been spending atleast 2 hrs a night just making flakes.experience seems to be the biggest help all around for knapping
i have been cutting back on my knapping as of late though,early spring weather has been incredible
i did get a chance to watch sawfiler for awhile
i learned that a larger bopper helps to get a biface thin when making them
if you get a chance watch the you tube vid on paralell flaking,that seems to help thin and slick them up too
good luck peace,
tim