Well not me, but my points. My knapping has been intermittent recently, partly because of fieldwork, and partly other projects. However, term has now started and so have our weekly experimental sessions. We have a nice small group of enthusiastic knappers, and quite quickly I have been able to let them get on with it whilst I focus a little more on my own practice. This week we ran out of bottles and so I introduced the group to the joy of Johnstone, or bathroom ceramic, of which we still have plenty. I really like it as a material and produced a couple of neat and tidy, but thick points.
And so, they were sat on my desk and by about 4.30pm yesterday I needed a break from head based stuff and so decided to play with thinning them. Anyway, they both went really well. My learning outcome from this successful process: the antler needs to do all the bifacial thinning before pressure flaking starts. On a thinned piece the pressure flaking is easier. This Johnstone point is still around 5mm so not massively thin, and it undulates a bit, however it is fully bifacially worked.
And then, this morning at breakfast Karen knocked a recycled glass glass onto the floor and it broke. At 11.30am today I needed a break from the head based stuff already, and coincidentally I had brought the remains of the unfortunate recycled glass glass with me.
I followed the same method and after clearing off the prominent shards with a hard hammer started to thin the remaining thick glass base with the antler. I got it bifacial pretty quickly, however because it was a thick piece to start with I carried on with the antler to approximately shape it, before using my soft iron nail pressure flaker to finally shape and thin it.
Anyway, I am pleased with it, and I am pleased with the learning process. Like so many things, being away from it for a while has allowed particular aspects to peculate. Coming back to glass knapping afresh has allowed new insights to emerge, and the continued thinning process is what has emerged here for me. This leaf shaped point is 4mm thick which is great, and formally it is a homage to the artefact produced by John Lord here. This kind of thinning using the antler makes the flake scars less visually obvious. Consequently, subsequent pressure flaking removals tend not to travel as far because they can run into the previous scars. This means that the nice ripple flaking pattern that is possible on glass that has been predominantly pressure flaked (see here) is not present on this much flatter piece. Back to the head based stuff 😦