What printer style to purchase for high density thermoset peices?

[Overlord475]

That would be true if you were to find a thermoplastic/curable resin that can live up to these temperatures.

That is the point of this thread...

Like I noted in an earlier post,

It looks like 3Dsystems makes a producte that when post-cured and heat treated can achieve a Heat Deflection Temp (HDT) of 513°F (267°C)

http://www.3dsystems.com/sites/www.3...uestone_US.pdf

[Overlord475]

Interesting read:

http://www.dsm.com/content/dam/dsm/s...t.pdf?download

[Mjolinor]

Interesting read:

http://www.dsm.com/content/dam/dsm/s...t.pdf?download

You reckon? Personally a page that wants all my personal details doesn't fit into the "interesting" category.

[curious aardvark]

That is the point of this thread...

Like I noted in an earlier post,

It looks like 3Dsystems makes a producte that when post-cured and heat treated can achieve a Heat Deflection Temp (HDT) of 513°F (267°C)

http://www.3dsystems.com/sites/www.3...uestone_US.pdf

Yes but you didn't want to use a super expensive industrial machine :-)

so what you want are the melting temps for standard desktop uv resins.

[Overlord475]

You reckon? Personally a page that wants all my personal details doesn't fit into the "interesting" category.

Dang, was hoping that would be a direct link after putting in my info.

[Overlord475]

Yes but you didn't want to use a super expensive industrial machine :-)

so what you want are the melting temps for standard desktop uv resins.

True, wasn't sure yet what machines the 3Dsystems' (Acura Bluestone) or Somos' (PerForm) high temp resins would work in.

[awerby]

Even if you found a SLA material that would handle the temperature, that wouldn't mean it would make a suitable mold for plastic injection. Injection molds have to be tough, strong, and release easily. I doubt that many SLA materials would qualify. It seems you'd be better off printing a positive part and making the mold from it using proven technology, such as a steel-filled epoxy material. Here's some more about the process: http://www.moldmakingtechnology.com/...uction-tooling

Andrew Werby
www.comptersculpture.com

[Prof Pat Pending]

This has been done a number of times over the last 15 years or so
https://www.google.co.uk/search?q=ch...reolithography

As for Bluestone, I've successfully laminated over it at 185C without a thermal post-cure.
A post-cure will elevate its use temp and stiffness at temp to a degree, certainly worth experimenting with.

Not sure about the prices mentioned in a previous post though. All of the filled resins are on the expensive side and process somewhat slower than conventional resins.

[awerby]

I looked at that article: https://www.researchgate.net/publica..._mould_tooling

and it didn't exactly convince me that direct injection into SLA molds was the way to go. First off, they used a SLA machine that could build parts in epoxy, which is a rare thing; most can't. Second, they just printed a shell, backed it up with aluminum-filled epoxy to draw off heat, and inserted it into a conventional steel mold. Thirdly, it didn't seem to work all that well - "flexural stress" was cited as the major cause of failure. Given that the test parts they used were extremely simple in shape, one would expect more complex ones (that would make more sense to use this method on) to exhibit even worse behavior. Even if you could make this work to some degree, without a major improvement in SLA materials I'm not seeing it as a viable process in industry.

Andrew Werby
www.computersculpture.com