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June 21, 2020 65 min

Closing moulds correctly is vital to get good casts out of them. There seems little point in making a good mould and then getting bad casts out of it.

In this episode we chat about things to consider when looking at ‘mould closure’. Essentially, a mould other than a flat or open mould will usually need to be attached or fitted to another component to produce a cast.

This could be another part of the mould if a ‘multi-piece’ mould is made and/or a core which will be placed into the mould to create the interior.

These pieces need to remain securely in position, and may be required to exert a lot of force if the cast piece needs to have thin seams which are more easily repaired.

That has cost implications - think about having to repair bad seams of fifty casts out of a mould which wasn’t closed correctly!

Small block moulds are often clamped together for speed and convenience, but what happens if the mould is huge, such as a full body or a dinosaur?

This episode has another hefty set of notes to help make sense of it all. It is picture heavy and goes deeper into what to look out for.  Get them here or the blog post for this episode

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Many thanks as always for your time checking the stuff out. You can email us direct at stuartandtodd@gmail.com or leave us a voice message directly on our site.

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-Stuart & Todd
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