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Don't confuse net flow with not happening. The load is definitely radiating IR or your 'non contact' thermometer wouldn't be able to tell you how hot it is? Yes, as it heats up less IR leaves than is absorbed (the definition of heating actually), but it's going both ways, right? If not how do...

But actually that's exactly what it shows! Fine grind means there are more contact points, therefore better heat transfer. Sand contacts the walls of the box in far more area than the same box full of rocks. OTOH, IR doesn't care. Here's a thought if it's all by IR why does grinding help in...

Yes, but since both the load and the wall are emitting IR while the wall is heating the load, the load is also heating the wall. The net transfer to the load (making it hotter in degrees) can only happen when it's emitting less than it's getting back.....that only happens when the wall is...

Yes, but since both the load and the wall are emitting IR while the wall is heating the load, the load is also heating the wall. The net transfer to the load (making it hotter in degrees) can only happen when it's emitting less than it's getting back.....that only happens when the wall is...

Agreed. IMO it's nearly impossible to wear one out in two years but if you should, or it should surrender under your assault, you're covered. I say "go for it!!". Great tool, get one and use it. But have a backup handy should you need to send it in. "Trust in Allah, but hobble your camel". OF

This has been rattling around in my head a bit. "Why is there a bias toward convection over conduction?"....... First the easy aside for those taking notes. Notice how the load shape tapers in VM as you move from teh center out? Cone shaped on the bottom, but flat on the top? IMO not an...

Very interesting. I'm guessing we're looking at an artifact of how the measurement is made? Basically such things are an IR light meter, masking the view (like is happening?) can give such results perhaps? I also found it fun to watch the heat 'soak into' the bulk of the copper, the time...

Sure. Screw the cover on and pick the hole (slot) you want to put it through (probably at the back?). Then you can try the 'blind side' press it in and rotate past the bump on the stud technique. A better one is to start it in and reach up inside the cap (or down through the big hole from...

I believe you've summed the condition up exactly. To bad you didn't post sooner, you could have saved me a lot of typing....... Don't confuse heat (calories, Joules or BTUs delivered) with temperature (degrees). Not all degrees are the same. You can wave your hand through that 1200 degrees...

I believe you've summed the condition up exactly. To bad you didn't post sooner, you could have saved me a lot of typing....... Don't confuse heat (calories, Joules or BTUs delivered) with temperature (degrees). Not all degrees are the same. You can wave your hand through that 1200 degrees...

I buy them 100 at a shot (about $8 IIRC) from McMaster-Carr. Nominal 1/2 inch size. They sell both the normal vinyl type (like PV, MF, and the rest) but also sell high temperature ones as well, OK with full temperature for 10 minutes meaning you can cap it hot. I recommend them instead, a...

Actually I don't think that's true. You bring the copper temperature up to about 400F, not 1200F, let alone 1200C (Copper melts just before 1100C...). If the copper was significantly hotter than 400F the bud contacting it would scorch and combust as it passed 450 or so, right? Move over...

Actually I don't think that's true. You bring the copper temperature up to about 400F, not 1200F, let alone 1200C (Copper melts just before 1100C...). If the copper was significantly hotter than 400F the bud contacting it would scorch and combust as it passed 450 or so, right? Move over...

Agreed. Perhaps a day or so longer, but I've had stuff from inside the states take longer. Came in a fun package, too. Lots of pretty stamps IIRC. Very Swiss...... A real treat, IMO. OF

Bummer. That means they won't be seen again until late Fall and the price will be at least twice as much, right? I'm starting to get the hang of how these things work out. OF

Thanks for 'seeing the other side'. Taking care of each other, how cool is that? Yer welcome, Bro. That's what we're here for. Helping the other guy. You know you really want an Air of your very own.......and it's only money...... You'll sleep better after you place the order, too. OF

Great, glad to hear it. I just don't want others to misunderstand and think 35 Amps is a spec worth going after (more so since it probably indicates a less useful compromise for us). There's also mechanical fit and unprotected status in the mix of course. Thanks. OF

That may have been your intent, but it's not what you asked now was it? "Technically if ''smoking weed'' is considered illegal shouldn't vaporizing it be 100% legal?" That's what I was replying to. It's illegal to vape, because it's illegal to have it in your control. No it's not "100%...

Cool. The point I was (no doubt poorly) making is on a 20 Volt range (2 is short for the job) you only display hundredths of a Volt on a typical 3.5 digit DMM. So we're interested in just a few counts here. At 4.0 Volts, give or take, one percent is four counts plus say two for zero tracking...

Is that what you meant to say? "Vapman is a conduction vape with some convection effects when drawing" makes more sense to me. Until you puff on it, not much moving...... In any event, I think we're in agreement the radiation contribution is not the driving force here? OF