As this is true and duly noted, our vacuum chambers are less efficient at altitude. We can only pull ~ -22hg (which will 'boil' water). When you do all the math, even though you can pull a 'boil' at altitude, it's not as effective of a vacuum at sea level. My theory is that you need a higher heat to achieve the same pressures while purging at sea level under a lower temp. ie: 110 deg at -29.9hg @ sea level = ~120 deg at -22hg @ 7000ft ? (temp range is a broad guess). Or is heat heat and over 130 deg regardless of altitude = permagoo. Where I am at 7200ft I feel 120deg is an ideal purge temp. Seems to work so far. Going to experiment w/ temps real soon and will report too. Fun stuff to think about!One thing to take into consideration is altitude. A lot of posters from Colorado may not realize it, but it takes less temperature with altitude to reach boiling points. I'm at 6600 feet, and water boils near 200°F, not 212°F. As a rule of thumb, any temperature used by people at sea level should be the equivalent of 10-12°F less at my house. Likewise, anything done at a mile high or up will take more heat at sea level due to the difference in atmospheric pressure. This is a consideration aside from bud strain differences.
^^^What Blu said^^^
Shatter is around 90-100F before oil starts to wax but is fully purged.
Don't go by temps on your griddle only pay attention to the oil temp itself. I've had strains wax up from between 105F-120F
Once you're oil gets up to 130F or higher you run the risk of turning the oil into perma goo. Better to very slowly and carefully raise the oil temp till it waxes.
If you purge from the start with large muffins at full strength vacuum you can get the oil to purge and wax faster than if you slowly raise your vacuum strength along the way as it purges out the solvent/moisture. Some BHO makers don't like doing full muffins and do the slower gradual method that's why I'm mentioning it.
Shatter:Hey guys. What times and temps do you use when vac purging? Any info helps. Thanks. Looking for times and temps on honeycomb and shatter.