Thursday, January 11, 2007
Support material
I had a sudden thought about support material (apologies if someone already suggested this and I've forgotten...).
Why don't we just run a 3mm rod of PVA through the Mk II extruder? The partially hydrolysed stuff has a low melting point and is water soluble (especially if you deposit it with small gaps to allow water ingress). Two birds - one stone...
See this DC Chemicals site.
Why don't we just run a 3mm rod of PVA through the Mk II extruder? The partially hydrolysed stuff has a low melting point and is water soluble (especially if you deposit it with small gaps to allow water ingress). Two birds - one stone...
See this DC Chemicals site.
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"PVA(Polyvinyl Alcohol) film generally has good mechanical properties, compared with other plastic films." says the website.
Dissolving it in water may make it swell first, which could be bad if it's acting as a support.
It's wood glue, of course - I'll do a few experiments...
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Dissolving it in water may make it swell first, which could be bad if it's acting as a support.
It's wood glue, of course - I'll do a few experiments...
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