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Friday, 13 April 2018

Tech Reflection

This week in tech for pewter casting the only task was to finish off sanding the castings, I started off the class using the 400 grit but when it ended I'd made it to 1200 grit. To sand the designs properly we needed to rub the sanding paper onto the edges and the sides a lot to make them feel soft, for every stage of sanding before you could advance into the next one you needed to show your work to Mr Grundy so that he could check it. If he thought that you'd done a good enough job he'd give you a better piece of sanding paper, and then the sequence would repeat. The final stage of sanding is the 1200 grit piece with water, after that a liquid is wiped onto the design which makes it look shiny.

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