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Step 9: Remove Crayon Marks from Walls

If you read step three then you can understand why this makes sense...

Crayons are made out of wax, blow dryers remove wax, thus blow dryers remove crayons.

Set the hair dryer on hot and keep it on the crayon mark until it melts.  The crayon will wipe off easily with a damp cloth and a small amount of oil soap cleanser.
<p>I have used mine to help peel off the original shipping labels on boxes and reuse them to save costs and waste! And if I can't quite get the label off, many are thermal printed and I can black out the label with the heat from the blow dryer</p>
<p>Good point on the thermal labels. Really handy to &quot;black out&quot; unwanted bar codes, re-using . the boxes is nice and &quot;green&quot;!<br><br>But keep your lottery tickets away from heat (like your dashboard in the sun or hair dryer) or they too will black out. It might be a winner, but you'll never be able to collect! (Most state-run lottery tickets are thermal printed.)<br><br></p>
<p>Great idea. I didn't know that about blacking out the label. I always reuse shipping boxes and the magic marker doesn't really cover the label well. Thanks.</p>
<p>Or you can take it apart and crank up the heating element to like 1000 degree F and make schmores...... :)</p><p>Also don't forget to use it to crank up the fire on your &quot;MINI METAL FOUNDRY&quot; like the one from &quot;THE KING OF RANDOM&quot; ;)</p>
<p>Good ideas - but good instractables have a person taking things apart - if we disassemble an otherwise dead or free hair dryer, we can use the wire element (nichrome) for hot wire projects (foam cutting, etc.).</p>
<p>I mean ABSOLUTELY no offense, but first, how do you &quot;thoroughly research&quot; the uses for a hair dryer? Do you carry a hair dryer around with you every where you go and say &quot;I wonder how I could use my hair dryer right now?&quot;? That question is meant in jest. And second, how do you &quot;thoroughly research&quot; the uses and only come up with 13? Don't get me wrong, some of these are good ideas, but you can't claim to have thoroughly researched a subject. This would imply that you have found all the possible ways to accomplish the use of a hair dryer. I don't mean this post to be &quot;mean&quot; or &quot;attacking&quot;, this is just a pet peeve of mine. </p>
<p>Carrying around a hair dryer to find new uses might just work. Convincing ants to leave town. Cooling hot car seats with the no heat setting. Blowing dog hairs into a corner for a quick pick up. Lots of ideas.</p>
<p>I agree with the gripe about using the Internet as a &quot;research&quot; method. There is so much misinformation out there that this is not real research, and definitely not &quot;scientific research&quot;. The Internet, and Instructables, seems to have become a haven for nay-sayers and false facts. While the information presented here is good for evaluation and consideration it also requires application of good sense and verification using one's own testing and observation. Be very careful of FREE information.<br><br>(1) Instead of heating frozen locks with a hair dryer and risking damage to plastic surrounding the lock....heat the key with body heat, or a cigarette lighter and insert it into the lock.<br><br>(2) Shrink-Wrap or Cling-Wrap will shrink slightly when exposed to mild heat, so you can use your hair dryer to secure cling-wrapped items.<br><br>(3) Older hair dryers used asbestos as the electrical insulator to hold heated wire elements in place, thus should never be used in a way that might allow you to breathe in any asbestos fragments.</p><p>(4) Heat guns and the hotter hair dryers can be used to unsolder and salvage expensive electronic components from printed circuit boards, but have a fire extinguisher or bucket of water handy and please do this outdoors where the acrid black smoke will not be a health problem.</p>
<p>I have to agree. Drop the &quot;thoroughly.&quot;</p>
Just make sure you use cold air for computers! The high heat could easily melt solder connections if left on too long, rendering your expensive equipment useless and broken.
Are you saying a normal hair dryer can melt solder with the short duration of &quot;dusting?&quot; That seems difficult to do under normal &quot;dusting&quot; conditions, even on high heat. I wish my hair dryers were that powerful.&nbsp;&nbsp; :)<br> <br> On another note, I had to buy a special heat gun like a super-powered hair dryer to help me melt solder to recycle electronic parts off of old circuit boards. Even then it took a long time and the components did not just fall off without some effort.
<p>To use a heat-gun or hair dryer for removing components from a PCB you can heat them until the solder begins to look &quot;shiny&quot; and then wrap the board upside down over a pan of water. This cools the components and helps keep them from flying into unexpected places.</p>
Hmm, this could actually be useful. Anyone remember the &quot;oven&quot; re-fluxing trick?
How hot is your hair dryer? I'd really start to worry if my dryer start to melt solder (melts from 90 to 450 degrees Celsius and computers can run at up to 80 degrees without damage)
Well most hair dryers will run between 100 and 140 degrees, they need to be hot enough to dry your hair in a reasonable amount of time. Also, that's why you don't point them in one spot for too long because you can burn yourself. <br>Computers can withstand more than 80 degree temps, as the cpu in my macbook pro is running at around 120 degrees right now. However, prolonged exposure to high heat from a hair dryer is certainly not good for any electronics, especially if it was recently turned on and running hot. Many laptop fans are barely proficient enough to cool them down, and I know from experience that lots of older computers suffer from this problem. Same situation with the Xbox 360.<br>Simply put- any heat is bad for a computer.
Your macbook is running at 120 degrees? Are you boiling water with it?
I think there's some unit mismatching here! I've had my smartphone get up to 60&deg;C (that's 140&deg;F!) while charging, and those components are much smaller. I know someone that fixes electronic components with a special heat gun, and those things have to get really hot. The only 'computer' I know that can't handle heat was the first few batches of Xbox 360 units.. ;)<br><br>ASIDE from all discussion, this instructable is going to serve as a wonderful reference for me! I've been seeing 'unusual use' how-to's in my newsletters lately, and I love it!
TamarGirl- Yes, most hairdryers have a cool setting, which is my point that it should be used in this case.<br><br>Gryt- All computers get this hot, it is simply what happens when they run. The processor itself will fluctuate between 120 and 140 degrees doing light work. That doesn't mean the case gets that hot, in fact it runs quite cool.<br><br>dfc849- Units are correct, smartphones will get pretty hot as they have a whole lot of processing power packed into a very tight space, requiring much smaller circuitry. The small space also allows less room for any type of heat dissipation (i.e. fans, heatsink, liquid cooling) which a computer uses. My Droid 2 sometimes gets hot enough to feel through my pocket. The temperature of a computer relies solely on how well it's components are cooled with these devices. The first Xbox 360s did not have a big enough heat sink, which caused the solder connections to come loose on the graphics chips. All they did to later batches was increase the heatsink size. I fixed my 360 which had this problem, as well as seen this happen with many iBook G3s I've worked on. A heat gun is a temporary fix, and WILL melt solder connections (that's the point).<br><br>But you are right, this is a great instructable. Merely pointing out a precaution that should be taken when working with these things.
My desktop peaks out at about 45 C under a relatively heavy load. That's from polling the CPU's on-board sensors, just the same as it probably is with your MBP.<br><br>Your units are wrong ... if your hair dryer was running at 100+ C, it wouldn't just dry your hair, it'd flash that thin coating of water to steam, severely scalding you in the process, in addition to the rapid burning caused by the hot air.<br><br>Sure, you can use a hair dryer to melt things. Ice, for example ... I've also used a hair dryer to melt hot glue to replace a hockey blade in a stick shaft, but it took a long, long time and it didn't fully melt the glue. The likelihood of it melting solder (90+ C) is pretty much nonexistent.<br><br>That said, yeah, you should use the &quot;cool&quot; setting. I'd be more worried about a photograph on the shelf than a computer though. ;)
No actually. When you put something in a 200 C oven the water doesn't flash to steam.
My units are still not wrong. When I say degrees I mean farenheit, not celsius. I never use celsius.<br><br>But like I said again, heat + electronics = bad, and if you have the $500+ to replace a computer on a whim, be my guest.
My hairdryer has a 'cool' setting which is only lukewarm; I can also have it blow just cold air. It's not new, it's years old, so I'd be surprised if more modern dryers didn't also have these settings.
Hair dryers are limited to 140 degrees F for safety. A hot air gun may be able to melt solder, but one would never use that to dry ones hair. I agree with your point that heat is bad for electronics in general; I just think it's a bit of an exaggeration to say a hair dryer could melt solder. 90 degrees C is 194 degrees F.
<p>Don't think it 'removes' much dust, it most likely just 'moves' it to anywhere else in the surroundings. </p>
<p>it can also be used to dry your hair......</p>
<p>Really? I've just got to try that. Actually, I hold down a large cowlick/curl just over my ear and blow that bugger straight.</p>
<p>A hair dryer also helps when paiting with paint. Working between layers, it will dry acrylic paint, allowing the painter to move on to paint more in a session. Acrylic does dry faster than oil, but drying will speed up the process anyway. It can also help move paint around in watercolor painting, and dry this medium too. Lots of fun with the creative process and heat!</p>
<p>Yes, it's great for that!</p>
How about warming up a cold bed on a winter night. Just turn on your hair dryer and make getting into bed even better! Your wild will love you for it!
Sorry-I mangled dictation there. <br><br>Be careful when using it for nail polish. Heat slows down the setting/curing/drying, whichever it is. I just learned that so I tried an almost completely opposite approach. I set up a shallow bowl of ice water and carefully placed my toes into the bowl, not submerging the nails until my toes were completely chilled and the polish was set. It worked better than other things I've tried. <br><br>De-steaming bathroom mirrors is great- keeps from adding streaky marks. Drying boots &amp; shoes can overheat the dryer (&amp; destroy the adhesive)- you didn't ruin it; just turn it off and let it cool. <br><br>I suspect a lot of times you reach for your hairdryer- like when you need to disassemble something constructed with hide glue- you could instead use a heat gun, even the less expensive crafter versions from Michaels or JoAnne Fabrics (finding coupons for each of them is quite simple- online, via text or sign up for e/mail versions. Just keep in mind the heat gun *is* hotter than a hairdryer.
<p>heat guns are LEVELS of magnitude hotter than hair dryers.</p><p>You can easily melt and ruin things accidentally that a little more time and a lot less heat wouldn't have.</p><p>If you can do it with a hair dryer (and it isn't embossing! That's a pain with a hair dryer!) use the dryer and don't risk ruining your project. (And things around it like paint, enamel, varnish, plastics, etc...ask me how I know!)</p>
<p>Just in the interest of passing on correct info, a heat gun is close to, but not even one order of magnitude more powerful than a hair dryer (10x), and certainly not multiple levels of magnitude (100x, 1000x).</p><p>According the the following source (and many others which roughly agree), a hair dryer goes up to about 130F, while a heat gun maxes out at about 1,000F.</p><p><a href="http://www.masterappliance.com/blog/tool-tips-miscellaneous/12-10-31/heat-gun-vs-hair-dryer-heat-tool-throw-down" rel="nofollow">http://www.masterappliance.com/blog/tool-tips-misc...</a></p><p>But the point that a heatgun can be A LOT hotter is true.</p>
<p>Thank you. People should remember that words have meaning.</p>
<p>You forget one more. In the hotel, use your hair dryer to heat leftover pizza from the night before. Cold pizza is good, but warm pizza is even better. </p>
<p>In reguards to </p>Step 11: Thaw Windows<p>be very careful there, I tried it on my car windshield, from the inside, the windshield cracked, on a regular window that could cause it to shatter. best to try a different method. </p>
<p>You're right, it can cause a windshield to crack. I have a squirt bottle full of methyl hydrate I use on my windshield in winter, also on locks. It works great. I also use silicon grease or silicon spray on automotive gaskets around doors. It keeps them from freezing to the car body and tearing.</p>
<p>have done this and seen it done many times, less heat, more air, take your time is the key. Still quick and easy, no calling the glass repair shop!</p>
<p>Pour nettoyer l'arri&egrave;re de l'ordi, et les prises pour laisser passer l'air dans un climatiseur. Bien pratique</p><p><br></p>
<p>I use a Black and Decker hot air paint gun for many of the same things. I hot melt glued together a power supply for a MacBook and later had to reopen it to do another repair. I used the hot air gun to soften the glue and take it appart. I over did it a bit and gave myself a blister. I use the gun all the time for heat shrinking, works great and not soot like I get from open flames. Thanks for all of the neat ideas I hadn't thought of.</p>
<p>Super quick defrosting of a freezer... Especially when the automatic defrosting doesn't work any more...</p>
Just a note from experiance, the plastic walls of your fridgr/ freezer are very thin. You can warp/ wrinkle and deform it. If you do, gently heat that spot again and push back in place protecting your hand with a cloth. Remove heat and hold in place till cool. How do I know? Dont ask. :-)
I used to work for an eye MD and the way to not &quot;Knacker up&quot; (love that!!!!) the lenses is to wrap them in a cool DAMP cloth when you heat treat the stems. This is done in a special vat of HOT plastic or glass beads at your MD's office BTW. <br> <br>A few uses for those like me who live in the Cold North: <br> <br>DEFROST your CAr windows on those wicked cold days <br> <br>UNFREEZE your car DOORS on those wicked cold days--this is very helpful after those rainy days when it gets so cold that your seals freeze and your doors are stuck closed. <br> <br>Use it to tighten up the WINDOW FILM you put on over your windows to keep drafts and insulate--the heat makes the plastic shrink and makes the seal work, <br> <br>Blow down pesky cob webs from your ceilings <br> <br>Blow dry your pets---this seems obvious but it is not always to some people. Use LOW heat and blower for this--esp if the paws are involved--can be useful to get ice balls out from between tender paw pads. <br> <br>To thaw your fridge without ruining your dryer--place a large bowl or flat pan of BOILING WATER--pour into bowl that you place in freezer BEFORE you add H2o---and close the door for a few minutes. This might take a few re-fills but it works without having to use a potentially dangerous ice pick or knife on the sides and or top. <br>You can use the dryer to dry up the last bits of water in there to avoid NEW glacial formations! <br> <br>
<p>I would advise against using boiling water or any high humidity in your refrigerator or freezer. The steam will get into the compressor coils and collect dust that can eventually burn it out. The best way to defrost is at room temperature over a period of hours, making certain to remove the condensation before turning it back on. </p>
Just an observation from an appliance repair guy. The evaporater coils are in the freezer and not near the condensor coils so thete would be no condendation caused by the steam. Thanks. :-)
<p>No it won't. I use this technique all the time. And with perfect results. Having said that, if there is a large build-up of ice, then it is advised to have a good supply of towels on hand to soak up all the juice! Remember the fridge is switched off during this procedure. In any case, the inside of the freezer compartment is hermetically separate from the compressor coils. Where you get this notion of the one contaminating the other quite baffles me! Perhaps you could explain further and put me out of my puzzlement.</p>
<p>I live in ND and have done all of these!</p><p>As for the water in the freezer, my grandma and mom have been doing it for decades! Works a treat!</p>
<p>To add to how it picks up wax... In college I had a candle fall while lit and there was purple wax all over my carpet. (I'm just realizing this is about an iron, but i'm sure it could work with the dryer too....and it's a great tip)</p><p>Put paper towels over the wax and put the iron on low/medium...works like a charm!</p>
<p>Hairdryers are essential to home made forges :)</p>

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