/diy/ - Do It Yourself

AutoCAD: Free at students.autodesk.org with a .edu email

>>395255
For the record, I am soooo jelly.

Don't forget the shims. I did when I swapped mine out the other day, and I couldn't figure out what that noise was. Then I had to take it all apart again.

>>395241
Have you seen his vehicle???

>>392568
>Expect
Annnnnd I'm out.

>>369527
What this anon said. As you raise or lower anything, you increase or decrease it's energy. As you raise something, you increase it's energy. This is called Potential Energy and is given by

Energy=(density)(9.81 m/s2)(height)

in fluids, which includes water. As you can see, as you increase height of whatever (in meters), the potential energy increases as well because everything else is constant.

To overcome this increase in energy, you must add energy to the system, by means of a pump. A siphon will not work in this case because that requires energy to move the water, gained by lowering the water level below where it is being siphoned from.

TL;DR: You will need a pump. They make quiet models.

>>363739
Hey I have one of those too

>>363554
In order to freeze something, you have to place it in an environment colder than the freezing point. Seems trivial but a lot of people don't realize this.

The commercial ice pack is made out of a different chemical with different thermal properties than isopropanol/water. Seeing from what happened, the commercial pack probably had either a lower specific heat meaning it can't sink as much heat from the surrounding material, or was able to sink the heat away slower than the isopropanol mix.

Chances are it was both, meaning the skin near the /diy/ version had more heat taken away from it, faster.

There is a more technical calculus/thermo/heat x-fer based explanation, but /diy/ isn't capable of rendering formulas like /sci/ etc. Plus I don't think it's necessary haha

>>363535
Derp. Yes OP this is good advice too. Put a towel/shirt/pants between you and the pack too.

>>363412
Don't do anything that will cause a drastic change in temperature of the tissue so no hotpacks or coldpacks for at least 3 days. Showers are fine (no baths), however stay away from abrasive soaps and washes. Essentially, what you want to do, is baby that area for 3 days.

I'm not sure why the isopropanol/water mix had such a drastic effect as that's what I use for knee pain (chondromalaciafag). Plus it sounds like you've used that before. Are you sure it's not a reaction with something that was on your tissue previously to applying the cold? Symptoms do point to very mild frostbite though as you said.

Seeing that you have already regained feeling in the area, I wouldn't worry about it too much. If the area starts to get streaky red marks, ooze pus, or show other signs of infection, go make an appointment with your GP.

Typically a good icing regiment is 15 minutes on then 15 minutes off.


General reminder to all anons to stay away from WebMD or other related sites. A great deal of time those sites get things very wrong and cause patients to go to the doctor and say things like "I have Disease X and I need Drug Y. Prescribe it now." This just irritates the docs. They went through 8 to 16 extra years of postgrad for a reason. Let them do their jobs.

/me sends delicious mixed drink (I've had a few)

And OP, bump 2/2 for you tonight. What's the project for?

>>362742
I do!