Casting Casting at high altitude?

Does anyone have experience casting at high altitude (6000 ft -- 1800 m)? I can't seem to find any information on Smooth-On's website. I'm wondering how it affects the silicon and resin. More bubbles? Fewer bubbles? Maybe it might even eliminate the need to use a vacuum or pressure pot?

Any and all comments appreciated!

 

Yikes, and I thought baking at altitude was challenging. Thanks very much for the link and the info!

I did get some Alumilite to test since that's available in my local hobby store. Looks like I accidentally made the right choice.

 

Thanks! As soon as the weather warms up, I'll try it.