Finally got my first decent biface after months of frustrating attempts - what clicked for me
Been at this hobby for about eight months now, mostly self-taught through videos and a lot of broken nodules. For the longest time my bifaces kept ending up lopsided or I'd snap them right through the middle during thinning. Last week something finally shifted and I produced a piece I'm actually proud of, so I wanted to write up what changed in case it helps anyone else in the same boat.
The biggest thing was slowing way down on platform prep. I was so eager to get into the thinning sequence that I was rushing my edge preparation, basically just smacking away without thinking about platform angle or thickness. Once I started spending real time grinding and isolating a clean platform before every single strike, my flakes started running the way I actually wanted them to. Obvious in hindsight but it took forever to actually internalize.
The other thing that helped was switching from a hard hammerstone to a softer limestone billet for the later thinning work. I had been using the same quartzite cobble for everything from decortication all the way to finishing and the results were pretty predictably rough. The softer billet gives me so much more control and the flakes are thinner and longer without me having to muscle through it.
I'm working with locally sourced Ozark chert, which is decent quality but pretty variable. Some pieces are glassy and cooperative, others have hidden inclusions that just ruin your day mid-reduction. Learning to read the material before committing to a full reduction sequence has been its own separate education.
Anyone else find a particular stage of biface work that gave them the most trouble early on? Curious whether platform prep is a common sticking point or if I was just doing something uniquely wrong for a long time.