[Jewelry making - Article 00373] - Re: [Orchid] Burn-out cycles for RP

[Paul D. Reilly]

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Andrew,

>     Did you run the Perfactory parts through a flash-oven (which
>     blasts them with high-intensity light) before burning them out?
>     That's supposed to cure the resin that remains inside the parts
>     uncured through the build process, promote melt-out, reduce ash
>     formation, and speed up the burnout cycle. 17.5 hours seems like a
>     long time. Are these fairly big flasks? 

    I don't do my own printing, I have various service bureaus do that
    for me (soon I hope this to change). The company I have printing my
    models on the Perfactory machine do cure them in a flash oven and
    this burnout cycle is their recommended cycle. They cast as well as
    print so I trust their input. The flasks I am casting are ususlly 3 X
    6 inch and contain a number of models on a central tree. I agree that
    17-1/2 hours seems long but at their given temp hold times and the
    ramping rate they advise, this is what it works out to and the
    castings have been very successful; so I haven't attempted to change
    the schedule they 1st recomended. 

    If you have another burnout cycle which you use for the Perfactory
    +/or Viper models please post it to the group, I'm always open to
    better, quicker, more cost effective suggestions and I am very
    willing to try new techniques. Personally, I like Solidscape models
    for their easy burnout properties, but some modelsare better done in
    resin printing to get the fine detail and the durability I frequently
    need for my clients products. 

    Thanks for the comments! I hope you can provide an effective, faster
    cycle! 

Paul
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