#62 - Mould Closure

Explicit content warning

06/21/20 • 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 [email protected] or leave us a voice message directly on our site.

If you enjoy this podcast and got something out of it, would you do us a solid and tell just one more person about us? Send them a link and help us grow!

-Stuart & Todd

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.

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.

----------------------------------------

Many thanks as always for your time checking the stuff out. You can email us direct at [email protected] or leave us a voice message directly on our site.

If you enjoy this podcast and got something out of it, would you do us a solid and tell just one more person about us? Send them a link and help us grow!

-Stuart & Todd

Previous Episode

#61 - Cutting Edges

Cutting edges are the point at which a core meets the mould, and is crucial in creating a fine edge for many appliances.

In flat moulds, there can be something similar even though a core isn’t involved, as it establishes where the appliance actually stops and the skin begins.

A cutting edge and overflow are critical in foam appliances, especially where a mould has foam latex added and a core is pushed into it. A gap between the core and the mould face would ensure the excess foam could escape, and the contact point where the mould meets the core would be decided carefully and precisely.

Go to our website to get the free booklet supporting this episode, or go here.

This principle has carried on with silicone, although usually excess waste is minimised owing to the fact silicone isn't mostly made of air, as is the case with foam latex.

Wherever the core meets or touches the mould - be it keys, the cutting edge or an unintentional, is known as a touchdown. Getting great edges is important in making pieces which will blend into the skin and appear as part of it, rather than exhibiting a clear boundary where the fake stops and the real begins.

Many thanks as always for your time checking the stuff out. You can email us direct at [email protected] or leave us a voice message directly on our site.

If you enjoy this podcast and got something out of it, would you do us a solid and tell just one more person about us?

Send them a link and help us grow!

-Stuart & Todd

Next Episode

#63 - Things That Go Wrong

We have all spotted things in shows which were never meant to be there. Scars swapping sides, hair up one minute and then down the next, blood which moves shot to shot or an errant edge which can't be hidden.

Those are the things which you notice, and maybe take great pleasure in spotting and shaming those unfortunate artists who were 'responsible'.

However, there are many things which you didn't spot which could have been issues if they were not overcome before the cameras started rolling.

We go through some of these hidden problems which are not so rare, and which will tax the creative minds of those on whose shoulders these things fall.

We have had a long lay-off and been quiet coping with one thing and another, so apologies for the radio silence. We have a few new toys which will mean things are going to be more regular on the podcast front.

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Links to things we mention in this episode

Nomad sculpting app: https://nomadsculpt.com/ Procreate art app: https://procreate.art/ Infinite painter: https://www.infinitestudio.art/discover.php Forger sculpting app: https://forgerapp.com/ ZBrush (all bells and whistles): https://pixologic.com/ Zbrush Core (stripped down, lighter version): https://store.pixologic.com/zbrushcore-2020/ ZBrush Core Mini (even more stripped down and free): https://zbrushcore.com/mini/# Sculptris (free sculpting app): https://pixologic.com/sculptris/

What we do in the shadows (excellent TV show): https://www.imdb.com/title/tt7908628/

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Many thanks as always for your time checking the stuff out. You can email us direct at [email protected] or leave us a voice message directly on our site.

If you enjoy this podcast and got something out of it, would you do us a solid and tell just one more person about us? Send them a link and help us grow!

-Stuart & Todd