I didn't have a lot of time to knapp this weekend, but I spent the time I had working on thinning with percussion and some on ishi stick flaking. I started with dacite (not sure where I got that) and got a point. Then I broke several more before finally getting a teardrop point last night out of something I'm sure I picked up off the tarp at Cross Plains. Not sure what it is, but it's a pretty pink with some pretty lines through it. That dacite is really nice to work with, I had a nice big preform about done and tried one of those basal thinning flakes.
There was enough left in the larger piece that I was able to finish out a 130gr hunting point. I used the ishi almost exclusively. I can see why so many youtube videos feature dacite as it works so nicely. I stalled a couple flakes toward the end. Then the last point is the first time I was able, with regular percussion, to thin a biface thin enough to finish. It wasn't a large preform, but it was a thin one. Was a little gun-shy on the base thinning so it was too thick there. I confess to using indirect on that one as I was so sick of breaking stuff by then I just wanted to get done. Need to work on symmetry. Normally I first see symmetry issues when I'm taking pictures of the finished point. This was no exception. Stalled out the notches badly on both of them.
Making progress, but sloooooooowly.
George