Flint knapping, 3D printing and primary school workshops

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.

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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.

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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).

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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!

Neolithic Milk of Magnesia interlude.

I had the opportunity to have a wander around Chorlton Ees one morning last week and came home with quite a few pieces of old glass recovered from the roots of fallen trees.

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This lovely blue piece in particular caught my eye and I like to think it is the base of an old Milk of Magnesia bottle.

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As you can see it is chunky and I wasn’t quite sure how well I could reduce it. This is because it is both narrow and thick and I was worried that I may run out of width before it was adequately thinned. Anyway, today has been a beautiful day here in Manchester and I got to spend a couple of hours outside playing with it.

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I am pleased with the result. It has become a Neolithic leaf shaped arrowhead, similar in proportion to some of the stone examples I have seen. The edges are sharp, the tip is good and it is fairly symmetrical.  What really makes it stand out though is the lovely blue colour. When Nick Overton sees this photograph he will immediately focus upon the very, very small section of original surface left in the middle. All I can say Nick, is: “when a pickpocket meets a saint, all he sees is pockets!”.