Nobody knew who they were, or what they were doing

*foment

OP said he had to replace one sooner or later.

I think BOTH are wrong, actually!

The opener is not intended to "lift" the door's weight.

The door's weight is supposed to be counterbalanced by the spring. It needs to be, otherwise you're stressing the opener, and more problematic, it's excessive force to open manually, and may crash down hard when you try to close it manually.

So, it sounds like he needs a stronger spring, if the guy tried to tighten it but couldn't hit the target offset

If it's a matter of stripping the good insulation, probably getting a dumpster for it, and rebuying and installing LESS effective insulation- or, alternately just replace the opener... well then just replace the opener and enjoy the good insulation

R4 insulation is 1/4W per m^2 per deg C of temp difference. Adding a second layer makes it R8, 1/8W per m^2 per deg C of temp difference.

OK so say you have two sq m, one is R4 the other is double-thick R8. The total leakage is 1/4+1/8 =0.375W per deg.

Let's say that instead we split the second 1 sq m sheet from the thick half into two equal pieces and distribute them to make two R6 panels, the total leakage is 1/6+1/6=0.333W

The problem is the metal alone: Low carbon steel has a thermal conductivity of 54 (W/m K). 24ga (thick high quality door) is 5.695mm=0.005695m for an R-value of 1.0546296296296296296296296296296e-4. (I THINK I have this right).

So bare steel being an R-value of "close to zero" is worse than it sounds. Heat transfer is reciprocal, so 0 would mean "infinite". In reality the steel surface does get hot but heat transfer into the room is limited to just radiation and conduction into adjacent air (air at the door surface will get very hot, but it doesn't circulate rapidly).

So, two R4 panels on top of 24ga steel is 0.5W per deg C.

Heat transfer through 1 panel of steel beside one panel of R8:

1/1.054e-4 + 1/8 = 9482 + 0.125 = 9482.125

Like I say, in reality the leakage of heat through steel has other limits, but the basic math direction is that an unprotected sq meter is so high compared to simple R4 that only that one unprotected sq meter will matter.

The leakage through the insulated half is already almost nothing, relatively speaking, compared to the exposed panel... or many of them. So doubling the insulation value to halve the leakage across the insulated only halves the leakage on the part that was too low to matter to begin with, and there's tons of heat flowing across the uninsulated portion.

Get a better garage door opener. Insulation is expensive and keeping your garage at the right temp is of great value. You want that insulation.

Yep, wow. Victorian literary porn.

Best title: "SUB-UMBRA, OR SPORT AMONG THE SHE-NOODLES"

She-noodles. I still don't know what that means.

If you like the aesthetic, you can get a fiberglass "150lb replacement limb" for a modern mall-weapon grade crossbow and fit it on there. They're cheap. That one's not a compound.

Wham-O sold a "Powermaster" crossbow in the 60's-70's.

It has an aluminum limb (the bow part). They did have a tendency to develop fatigue cracks and break.

She's not a Christian, she's an Egyptian pharoah.

In a Week

"... fully functional?" FULLY FUNCTIONAL!

This may be the most messed-up scene in Star Trek canon. In the whole hospital, he is there mortified at "the dark ages!" and implies his peers here are SO ignorant and incompetent at practicing medicine. Over and over. Dude, when did you become a cranky entitled old man complaining about everyone else? Because you're from another time, you have to hate on these doctors?

He's not her doctor, and knows nothing but that she claims she's on dialysis. Still he gives her a life-altering medication. Which should help, sure, but damn, you don't know anything about her case. There's no informed consent.

He keeps these miracle pills right in his pocket to heal people like Jesus. Does this regenerate other things? Does he always bring them along? I assume he didn't pack this morning and say "better bring this one, in case someone has kidney failure on the mission"

McCoy is kind of a dick here. The ends doesn't justify the means. New kidney aside, that was a dick move.

I got lucky and the unmotorized one they rent actually made it from the cleanout to the clog and got it open. It's not as long as the motorized one