Many thanks to my neighbour Ashif from L.L.C. Carpet and Laminate flooring.
He fitted some carpet and laminate for us earlier this year and told me at the time that they had to pay to dispose of off-cuts. My ‘leg-protectors’ are made from exactly such carpet off-cuts and work really well. Having now done a few workshops it became clear that I could use a few more leg protectors. This week Ashif popped round with this ‘book’ of twelve carpet samples. I had told him what I needed and asked him for off-cuts, but he thought these may work better because of the stitched edges.
These are carpet they no longer sell, and as well as being ‘soft and sumptuous‘ and made in Great Britain, they are absolutely free and rescued from landfill. Ashif may not fully comprehend my enthusiasm for free and recycled flintknapping equipment, however I do fully appreciate his excellent after sales customer service. Many thanks Ashif!
I have some workshops planned aimed at primary school children studying the prehistory of Britain. Following the theme of this blog, one of the activities is to bring together the components necessary for the kids to make a Bronze Age arrow. Rightly or wrongly, I am a little cautious about letting small children loose with flint or glass arrowheads so I thought I would get some 3D prints. The flint originals were a Neolithic leaf shaped example and a Bronze Age barb and tang arrowhead both produced by John Lord for Elizabeth Healey’s teaching collection . These originals were scanned in by a colleague Tom O’Mahoney.
Tom also scanned one of my glass barb and tang arrowheads to see how the scanner would cope with a reflective and transparent material. This example had to be covered in talcum powder before scanning.
After scanning, two prints of each of the flint versions was produced for me by Ed Keefe from the print unit at Manchester Metropolitan University (ManMet).
The first two examples on the left have some horizontal lines running across. Ed described this as similar to when a photocopier is running low on toner. Consequently he printed them again in the more transparent material. The second two are excellent ‘plastic’ reproductions of ‘original’ flint reproductions. However, the most impressive aspect is the price. Because prints are priced by the cubic centimetre each arrowhead worked out at £2.50. Full colour versions would have cost £3.50. My scans can be uploaded to sites such as Sketchfab or Thingiverse and therefore downloaded free of charge by teachers with the print costs being minimal.
The workshops are still at the planning stage, but I have been impressed by the results and the prices for this process. I would certainly recommend the 3D print facility at ManMet to anyone who thinks the process may be useful to them. Ultimately though, it depends what the kids think!
Today we had an experimental session at the University of Manchester with a range of lithics enthusiasts and experimenters. It brought home to me again the import of thinning, and difficulty explaining how it works. I have a better understanding of the problems of steep angles now, they are simply pressure flaking platforms waiting to be exploited. All good, but I was not able to get anyone to get a piece thinner than 6mm. This is effectively the original thickness without bifacial thinning. I know from my own experience, and actual Bronze Age arrowheads on the Portable Antiquities database, that 5mm is necessary to have a good chance of successful notching. I need to be able to do it consistently, and then explain how I am doing it. That is my next learning and teaching task, transitioning from doing to facilitating. I am going to see if anyone is interested in a thinning and notching session. On the plus side, drawing attention to the sound of the hits was indeed a useful strategy.
Last week I had the opportunity to run a workshop with the experimental archaeology group at the University of Chester (thanks Barry Taylor). The aim was for individuals to go from zero experience to producing a barb and tang arrowhead from a glass bottle. It went pretty well in that almost everyone (sorry Barry Taylor) came away with something approaching an arrowhead. Perhaps more usefully it introduced the participants to the joy of knapping, as well as the functions and effects of hard hammer, soft hammer, and pressure flaking. It brought home to me again, how difficult the thinning process is, and also, how difficult it is to teach. One thing that worked well was encouraging people to listen to the sound of their hits, and to identify the sound associated with the result they wanted. A second aspect that has occurred to me afterwards is perhaps to shift the focus onto producing the kind of flakes required. If someone understands how to consistently produce thinning flakes, then actually thinning a piece of glass should become easier. Easier perhaps than being focused upon the more complex goal of trying to make an arrowhead. I am running the same workshop in 2 weeks time at the University of Manchester with third year lithics students (thanks to Elizabeth Healey). I will test this idea to see if it helps a person to master the thinning process. Let’s see.