[Design and Technology] Materials used for turning

Wed Feb 19 10:28:17 UTC 2020

Agree with Monique, embedded resin things are easy to do.  I prefer epoxies over polyester for many reasons in this regard, but they're much nicer to turn and polish.

You can turn HDPE plastics (chopping boards are this, as are milk bottles), and a student at St Michaels while I was there completed his entire year 12 project by collecting and melting down recycled milk containers into a solid blank, which was turned into a lampshade.  You can, though, purchase solid sections in a whole range of sizes and colours.  Turning HDPE wants sharp sharp sharp tools, or scrapers, and then final sandpapering down through a broad range of grits to wind up nice.

Bakelite, Tufnol and so forth are formaldehyde resin composites (fabric in glues, effectively), and turn well - but they're not commonly turned and mostly get used for gaskets and washers, pulleys and so forth.

You can, of course, use tree branches of relatively straight feature, stump sections, and so forth at will.  They CAN be unpredictable however.

David Pitt Head of Department - Design Technology.
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From: destech <destech-bounces at edulists.com.au> On Behalf Of Elizabeth Keep
Sent: Wednesday, 19 February 2020 9:09 PM
To: Design and Technology Teachers' Mailing List <destech at edulists.com.au>
Subject: [Design and Technology] Materials used for turning

Hi everyone,

I'm hoping you may be able to help.
I'm using the lathe with my Year 11's and am looking for interesting materials (new and second hand) that would be suitable. I'd ultimately love some plasitcs or things of colour or from nature.
Any ideas gladly welcome.

Thanks,
Liz

Elizabeth Keep
Teacher

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